Single Write To Variable Area - Omron EJ1 User Manual

Detailed Description of Services
7-5-3

Single Write to Variable Area

Command
Response
198
Command/Response Example
The following command writes the set point of channel 1.
Slave address: H'01
Write start address: H'0240
Write data: H'03E8 (to write a set point of 100.0 C)
Command: 01 10 0240 0001 02 03E8 8BEE (CRC-16)
Response: 01 10 0240 0001 01A5 (CRC-16)
This service either writes data to the variable area or executes one of the
operation commands given in the table in 2. Write Data, below.
Function
code
Write start
Slave
address address
H'06
1 1 2
Function
code
Write start
Slave
address
address
H'06
1 1 2
1. Write Start Address
Set the write start address to H'FFFF (or H'0000 when using version
) when executing an operation command. When writing to the vari-
V1.2
able area, refer to Parameter List on page 233.
2. Write Data
When executing an operation command, place the command code in the
upper byte of the write data and place the related information in the lower
byte. When writing data to the variable area, refer to Parameter List on
page 233.
Operation command
Write Mode
Software Reset
Write data CRC-16
2 2
Write data CRC-16
2 2
Command code
04 00: Backup
01: RAM
06 Always 00.
Section 7-5
TC related information