Omron CPM2C-S100C Operation Manual page 149

Explicit Message Communications
Response Format
Parameters
Destination node number (command)
Specify the node number of the CPM2C-S where the data will be written.
Specify the node number in 1 byte (2-digit hexadecimal).
Service code (command, response)
Specify 1F (Hex) in the command.
The leftmost bit of the service code is turned ON in the response, so 9F (Hex)
is returned.
Class ID (command)
Always 2F (Hex).
Instance ID (command)
Specify the data area where data will be written. Specify one of the codes
listed in the following table in 1 byte (2-digit hexadecimal).
Code Area name
01 (Hex) IR area
02 (Hex) IR area
03 (Hex) DM area
04 (Hex) LR area
05 (Hex) HR area
07 (Hex) Timer/Counter area
Address L and Address H (command)
Specify the starting word address where data will be written. Specify the
address in hexadecimal as follows:
Address L: The rightmost two digits of the 4-digit starting address.
Address H: The leftmost two digits of the 4-digit starting address.
Write data (command)
Contains the data that will be written in the specified data area. Input word
data with the leftmost byte (bits 8 to 15) preceding the rightmost byte (bits 0 to
7).
Number of bytes received (response)
Indicates the number of bytes of data (in hexadecimal) from the "source node
number" on.
Source node number (response)
Indicates the node number (in hexadecimal) of the CPM2C-S that returned
the response.
Precautions
The range of data specified by the data area (instance ID), starting address
(Address L and Address H), and write data parameters must not exceed the
range of the CPM2C-S data area.
Service code
Source node number
Number of bytes received
IR 000 to IR 049
IR 200 to IR 227
DM 0000 to DM 2047
LR 00 to LR 15
HR 00 to HR 19
TC 000 to TC 255
Section 6-3
Address range
127