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Chapter 2 Specification of Communication port for CPU module

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(b) Assignment internal output in the slave station

I/O No. Usage

WM 0000 to 000E RECV 0 command

Parameter area

（s to s+14）

200 to 21F Transmission data area（32-word）

300 to 31F Receiving data area（32-word）

WR 0000 to 000E TRNS 0 command

Parameter area

（s to s+14）

0200 to 021F Transmission data area（32-word）

0300 to 031F Receiving data area（32-word）

4000 Slave station number during communication

4001 Own station number

WL 001 to 003 Storage area for receiving data

[3] Transmission format

Transmission formats between the master station and slave stations are as follows.

(a) Request format from the master station to the slave station. (A maximum of 3 bytes)

Start code Slave station No. End code

02H 1 to 3 0DH

(b) Response format from the slave station to the master station. (A maximum of 5 bytes)

Start code Own station No. Data End code

02H 1to 3 Any* Any* 0DH

*: Any data can be set except the end code (0DH). The slave station number is set in this sample

program.

[4] Receiving result in the master station side

If the transmission between the slave stations 1 to 3 complete successfully, the following data is set in the

WL area of the master station. The slave station sets its own slave station number as part of the data.

Address Set value Description

WL0001 0001H Received data from the slave station 1.

WL0002 0002H Received data from the slave station 2.

WL0003 0003H Received data from the slave station 3.

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RTS WM300 Spezifikationen Seite 56