Futaba FDK31TU Mobile Station Instruction Manual

Futaba FDK31TU Mobile Station Instruction Manual

This instruction manual contains important notices and how to use this product safely. Please be sure to read this instruction manual before you use this product. Please understand the following symbols that are used in this manual before reading this instruction manual.

The symbols are defined as follows:

  Indicates a hazard that can cause severe personal injury, death, or substantial property damage if the warning is ignored.

Indicates a hazard that will or can cause minor personal injury, or property damage if the caution is ignored.

This product must be installed and set up by professional engineers before it can be set up and used, and it cannot be sold directly to general consumers.

Compliance Information Statement (for U.S.A.)
This device, trade name Futaba Corporation, model number FDK31TU, complies with part15 of the FCC Rules.
Operation is subject to the following two conditions:

1. This device may not cause harmful interference, and
2. This device must accept any interference received, including interference that may cause undesired operation.

CAUTION: To assure continued FCC compliance

1. Any changes or modifications not expressly approved by the grantee of this device could void the user’s authority to operate the equipment.
2. This equipment complies with FCC radiation exposure limits set forth for an uncontrolled environment. This equipment should be installed and operated with minimum distance 20cm between the radiator & your body. The responsible party of this device compliance is:

The following six are extremely important warnings.

1. Be sure to use this product within its specification; otherwise it may cause failures and malfunctions.
   Especially, pay great attention to temperature range and power source voltage.

2. Do not install this product to the sites where the product is disposed under the direct sunlight and/or under the high temperature. Prior to use this product, please make sure the temperature around the site where you are planning to use this product, because this product is guaranteed at the limited ranges in operating temperature and storage temperature. Operating the product beyond the guaranteed temperature range may cause failure of this product.

3. Do not install this product in a high humidity area. A drop of water on the circuit inside of this product may cause failure of this product.

4. Avoid this product from being watered. If water enters inside this product, it may cause failure of this product

5. The specification of the external interface of this product is different from ordinary one. Please make sure the wire identifications before connecting external equipment.

6. Be sure to confirm that the power switches are off before connecting or disconnecting connectors. Connecting and disconnecting connectors while any power is on may cause failures and malfunctions.

The following three are very important cautions in handling this product.

1. This product is designed especially for industrial applications. If you are planning to use this product in the area where the use of electromagnetic wave is restricted because medical equipment and airplanes are used near its area, Please confirm that this product does not interfere with those before you use this product. Please do not use this product unless you can confirm that this product does not interfere with those medical equipment and airplanes near the site.

2. Please pay attentions to the electromagnetic conditions around this product. This product uses electromagnetic wave as a communication method. Consequently, if there is a strong source of electromagnetic wave near this product, this product may not able to fully achieve its performance.
   Please check the electromagnetic conditions around the site where you are planning to use this product prior to use this product.

3. This instruction manual is protected by the law of copyright protects. Futaba Co. is not responsible to any problem and incident that are caused from reprinting this instruction manual by somebody other than Futaba.

INTRODUCTION

1. Special Features

2. FDK31TU (fixed station) outputs its modulated signals to the 200-ohm feeder cables, demodulates the modulated signals of a FDK32TU (mobile station) that come through the feeder cable, and sends them to FDK31TU’s external controllers. Please note that a matching/distributing unit is necessary to attach one or two 200-ohm feeder cables to this modem.

3. In this system, multiple mobile stations can be allocated to the single feeder cable. And each mobile station can have individual address that can be set externally. As a result, a single fixed station and multiple mobile stations can establish a communication network.

4. The interface between the external controller and the fixed station or the one between the external controller and the mobile stations is designed to meet RS-422 and RS232C.

5. FDK31TU has 2 operation mode:

6. FSK mode (1 ~ 50ch) Communication speed is 100kbps.

7. OFDM mode (51 ~ 100ch) Communication speed is up to 422kbps.

8. Names and functions of parts of the fixed station

9. Indicators of signal reception level

10. Indicator of signal transmission

11. Indicator of the power status

12. Switches to set external interface, transfer speed, and etc.

13. Power switch

14. Connector to the 24V DC power

15. Connector to the external reset control

16. Interface connector to RS-232C/RS422 (specially pin assignment is employed here)

17. Connector for Matching/distributing unit
    

Names and functions of parts of the matching/distributing unit.

1. Connector to the fixed station （BNC)
2. Opening for connecting a feeder cable
3. These parts are for screws to fix this unit.
   

Names and functions of parts of the terminator unit

1. Opening for connecting a feeder cable
2. These parts are for screws to fix this unit.

POWER

1. Before turning on the power
   Be sure to read this instruction manual prior to turning on the power of the modems.
   Improper operations of the FDK modem may not only cause failures of communication but also cause malfunctions and/or damages of this modem and the external equipment connected to this modem.
   In order to establish proper communication between this modem and mobile stations, communication parameters should be set by switches, which should be set before turning on the power switch.
   In addition, since Futaba has specially defined the pin-assignment of interface connector for RS-232C/RS-422;
   please carefully confirm the wire identifications of the interface cable and pin layout.

2. Voltage of the power source
   The input voltage to this modem should be within the range of 24Vdc +/- 10%. Otherwise, this modem and the external equipment connected to this modem may cause damages or malfunctions.

3. Connector for the power source
   The type of the connector used for this modem is S2P-VH made by J.S.T. Mfg. Co., Ltd. Supply the voltage anywhere between 24V +/- 10% to the “+” marked terminal and connect the ground wire to the “-“marked terminal.
   Connector for the power source
   

Power switch
The label “POWER” is printed beside the power switch of this modem. (See Fig. 2-2)
Pushing this switch toward “ON” will turn on the power switch and the LED indicator of the power on top of the unit turns on green. On the other hand pushing the switch toward “OFF” will turn off the power. The picture 2-4 shows “OFF” state.
Power switch

INSTALLATION

The modem is mounted on a cart used in semiconductor plants.

This product must be installed and set up by professional engineers before it can be set up and used, and it cannot be sold directly to general consumers.

1. How to install the modem
   Fasten the modem by screwing the four corners with four M3 screws
   

2. Connecting the fixed station and the matching/distributing unit (FZE03)
   

3. Connecting feeder cables and the matching/distributing unit (FZE03)
   Please follow the next procedures.

4. Turn the two screws that are located in center of one of the terminal pads so that metal wire of a feeder cable can fit in.

5. Turn the screws of the cable holder made of black resin.

6. Insert a feeder cable into a hole of the chassis and then insert the two bunches of conductive wires of the feeder cable separately into the two holes in the terminal pad.
   Please make sure that twisted wires do not loosen and touch the neighboring wires. If a single wire of a bundle touches the other bundle, communication cannot be established.

7. Tighten the two screws on top of the terminal pad.

8. Tighten the screws of the cable holder made of black resin.

9. Connect another feeder cable to the other side of the unit following the procedure of above 2) through 5). If another feeder cable is not required, attach 200-ohm resister to the terminal pad.

10. Connecting feeder cables to the terminator unit (FZE05)
    Please follow the next procedures.

11. Turn the two screws that are located in center of one of the terminal pads so that metal wire of a feeder cable can fit in.

12. Turn the screws of the cable holder made of black resin.

13. Insert a feeder cable into a hole of the chassis and then insert the two bunches of conductive wires of the feeder cable separately into the two holes in the terminal pad.
    Please make sure that twisted wires do not loosen and touch the neighboring wires. If a single wire of a bundle touches the other bundle, communication cannot be established.

14. Tighten the two screws on top of the terminal pad.

15. Tighten the screws of the cable holder made of black resin.

16. Attaching Ferrite core to the feeder cable
    Be sure to attach ferrite cores to the feeder cable in order to reduce radiation noise in differential mode.
    Attach one ferrite core to the end of the feeder cable that is connected to the matching/distributing unit and attach another ferrite core to the other end of the feeder cable that is connected to the terminator unit.
    Impedance of each ferrite core for both sides should be 800-ohm, which instead can be comprised of several small ferrite cores like four pieces of 200-ohm.
    
    Ferrite core
    TAKEUCHI KOGYO CO.
    SFT-72S Impedance 210-ohm (100MHz) 4 pieces (each side)

CONNECTING COMMUNICATION CABLE

Connector for RS-232C/RS-422
Connector model: Hirose Electric Co., Ltd. RDED-9P-LN (4-40) (50)
Please select one out of RS-232C, RS-422.

RS-232C uses the pins 2, 3 and 5.
RS-422 use the pins 5 through 9.
SW 1 on top of the unit can select either RS-422 and can either connect the termination resisters or disconnect them.
SW2 is the common switch for RS-232C, RS-422 to set parameters of communication speed and so on.
Please refer to the next section for further detail.

SETTING SWITCHES

The functions of the dipswitches and a rotary switch are follows:

Table 5-1 SW (DIP-8)

3
4
5
6
7| Transfer speed| Refer to Table 5-2.
8

Table 5-2 Setting of transfer speed

SYSTEM OPERATION

1. Outline of communication
   FDK31TU is the wireless modem unit to communicate with FDK32TU. To send data to FDK32TU through serial port (RS-232C, 422) of FDK31TU, apply command @TXT or @TBN. Refer to the instruction manual about detail of @TXT or @TBN command. Communications on the air through feeder cable and coupler are performed with packet data transmission mode.

2. Preparation of communication on the air
   Before making communication on the air with FDK32TU, it is necessary to choose frequency and chose the port
   of two couplers of transmitter and receiver. The frequency of each FDK31TU and FDK32TU must be same.

3. Data communication with serial port of the wireless modem

4. Transmission
   To send data to FDK32TU through serial port (RS-232C, 422) of FDK31TU, apply command @TXT or @TBN.
   If there was respond ACK from FDK32TU on the air, FDK31TU make OK output to its serial port (RS-232C, 422).
   If there was no ACK from FDK32TU on the air, then FDK31TU make NG output through its serial port (RS-232C,
   422).

5. Receiving
   FDK31TU calculate CRC and make address recognition and make data output through its serial port (RS-232C,
   422).

6. Data packet format
   Data packet format is described below.

COMMUNICATION WITH MOBILE STATIONS

Communication procedure (an example)

1. Set parameters of fixed station, and make it effective to communicate with mobile stations.

2. Connect to the power source.

3. Connect the external interface (One of RS-232C, RS422)

4. Connect to the matching/distributing unit.
   (The order between ② and ④ can be changed freely.)

5. Turn on the fixed station and mobile stations.
   (The order to turn on the powers is free.)

6. Wait more than 1 second and then set frequency channel.
   After receiving a response of “OK”, forward to the next step.

7. Send command/data in format of @TXT or @TBN.

If “OK” is returned, the communication is completed.
If “NG” is returned, possible reasons of the failure are insufficient signal strength and improper settings of communication cable, switches and frequencies.
Send @PNG command and read the value of RSSI. If the value is 57 or lager, please confirm the setting condition again.
If “OK” is returned, it is possible to continue communication by repeating ⑦.

COMMUNICATION COMMAND

Input and output between external control equipment and mobile stations are carried out by packet method.
The data format of the packet method is either in the sequence of “@TXT (address) (user data) [CR] [LF]” or in the sequence of “@TBN (address) (data length) (user data)”
Binary data method is useful to avoid communication errors when a control code matches exactly a part of user data.

ASCII.)
Data| : ASCII code, hexadecimal
The data length| : Arbitrary but no more than 1024 bytes.
[CR]| : 0Dh in hexadecimal
[LF]| : Sending “ABCDEFG” to a mobile station whose address is 400.
Binary data| @TBN (address) (data length) (user data)
Address| : ASCII code, hexadecimal 3-digits
Data length| : “001” to “400” (0 to 1024 bytes)The number of bytes should be expressed by hexadecimal 3-digits in ASCII code.
[CR] [LF]| : not necessary
If data length is longer than predetermined data length, the surplus of the data will slide in front of the next instruction. Therefore “NG [CR] [LF]” may be returned to the data sender.
Example| : Sending 7 bytes of binary data to a mobile station whose address is 400.
@TBN400007 (7 bytes of binary data)

Taking into consideration the manual input through terminal software, the text data method can delete a character by recognizing backspace key while the binary data method treats backspace key as data.
In the communication between the feeder cable and mobile stations, a packet is defined and transmitted as 64 bytes.
In the case that transmission and reception of all the data is completed properly, the sender will output the message “OK [CR] [LF]” after receiving ACK of the last packet.
On the other hand, the receiver will output the same character string that was sent from the sender from the headfirst.
In case of @TBN command, the receiver will output the data that is within the range determined by the user data length, otherwise surplus of the data will not be outputted.
In case of communication error, if ACK is not returned from the destination after repeating retransmission up to the preset number, the sender will stop sending data and output “NG [CR] [LF]” immediately after detection of the end of input data.
In case of failure while sending a packet due to communication error, the sender will output the partial data that the sender could properly receive from the external interface of the receiver.

CONTROL COMMAND

Control commands are used for controlling the fixed station.

code) or input nothing for ppp.
(Note)
Inputting a single digit is allowed for 1 through 9. Do not input space between “FRQ” and “ppp”.
2) Processing| : If there is no input for “ppp”, the current frequency channel number will be outputted. Response message
FRQ = pp0 [CR] [LF] (Note)
pp : 00 to 120 (ASCII code) Spaces are necessary in front of and afterwards of “=”.
If a channel number is inputted in “ppp”, this modem will return “OK” message to the host computer after changing the SRAM register and reassign the frequency number.
3)| Frequency channel at the booting At the booting this modem and resetting the software, the frequency channel is 0.
@PNG| : Request response & read the reception intensity of the destination

1. Input
   : @PNG[CR][LF]| : @PNG[CR][LF
2. Processing| : Receiving this command, this modem returns as a response message the signal intensity of the last packet that this modem has received.
   Response massage RSSI = nn [CR] [LF] nn: Hexadecimal number of signal intensity in [dBm]
   @RST| : Reset software
3. Input| : Reset software
4. Processing| : Receiving this command, software will be reset
   This command restarts the exerciser program from the start address. Also the SRAM register will be reset to the condition when this modem was turned on. In addition, this command will initialize not only the software but also the hardware of this modem. It takes about 305ms. After the completion of initialization, a response message of “OK” will be returned to the host computer.

ADDRESS

Set the address at “001” when sending data to the fixed station from mobile stations.

INDICATORS

have been sent to feeder cables.
RX LEVEL| Combinations of eight LEDs indicate the levels of the signal intensity.
1  LEDs ON         : < -80dBm
2  LEDs ON         : < -70dBm
3  LEDs ON         : > =-70dBm

EXTERNAL RESET

The following connector is equipped with this modem so that the hardware of this modem can be reset externally.
Connector type : J.S.T. Mfg. Co., Ltd S3B-XH-SM3-TB
In order to reset this modem externally, short #2 and #3 pins of the RESET connector more than 10ms: then disconnect them.

PRODUCT SPECIFICATION

Communication characteristics of feeder cable

【FSK mode】
Tx frequency band (transmitter)| 230    MHz    ～ 235    MHz
Rx frequency band (receiver)| 151    MHz    ～ 156    MHz
Frequency band per channel| 100    kHz
Interval between frequency channels| 100    kHz
Number of frequency channels| 50
Communication speed| 100    kbps
Emission power| FCC part15    Class B≦ 46.0dBμV/m at 3m
【OFDM mode】
frequency band (transmitter / receiver)| 302    MHz    ～ 322    MHz
Frequency band per channel| 400 kHz
Interval between frequency channels| 400 kHz
Number of frequency channels| 50
Communication speed| 433    kbps
Emission power| FCC part15    Class B≦ 46.0dBμV/m at 3m
【Common to All mode】
Reception signal intensity| -87dBm (at 100kbs, PER  ≦ 10-1 )
Addresses for mobile modems (own address)| 400h～FFFh(3072 addresses）
Communication mode| Full-Duplex Packet mode

External I/F specification

pin assignments are used for this product.)
Communication speed| 19.2kbps, 115.2kbps, 921.6kbps
Communication method| RS-232C,RS-422   Full-Duplex Packet mode

fixed station’s general specification

bonded steel Color: DIC 546 1/2 (Dainippon Ink)
Operating temperature range| -10C to +50C
Storage temperature range| -20C to +70C
Operating humidity rage| 35%RH to 95%RH (under no condensation)
Storage humidity range| 35%RH to 95%RH (under no condensation)
Anti-vibration| The product should survive the following vibration test;Vibration amplitude   : 3.5mm Frequency       : 10Hz 2 hours for back and forth2 hours for left and right 4 hours for up and down
Anti-shock| The product should survive the following shocktest;Acceleration :    500 m/s2 3 times along with 3 axis,total 9 times500 m/s2
Anti-electro static| Apply following high voltage Input/output: ±2kV (contact discharge)There should be no malfunction after test.: ±4kV (contact discharge)There should be no damage after test.The test follows IEC61000-4-2

FREQUENCY CHANNEL14-1. FSK mode

OFDM mode

FUTABA Corporation of America
2681 Wall Triana Hwy Huntsville, AL 35824, U.S.A.

Phone: 1-256-461-9399
FAX: 1-256-461-1059
E-mail: service@futabaUSA.com

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