Chapter 2
2-10
CompoWay/F Communications Procedures
■ Write Variable Area
This service writes data to the variable area.
Service Request PDU
Service Response PDU
1.Variable Type and Write Start Address
For details on variable types and write start addresses, refer to Chapter 3 Communications Data.
2.Bit Position
Always “00.” The 3G3JE does not support bit access.
3.Number of Elements
4.Response Code
Normal Completion
Error Completion
Number of elements Processing
0000 The write operation is not performed and processing ends in a normal completion.
(Do not append write data to the service request PDU.)
0001 to 0002 The write operation is performed and processing ends in a normal completion.
Response code Name Description
0000 Normal completion No errors were found.
Response code Error name Description
1002 Command too short The command is too short.
1101 Area type error The variable type is wrong.
1103 Start address out-of-range
error
The write start address is out of range.
1104 End address out-of-range
error
The write end address (write start address + number of
elements) exceeds the final address of the variable
area.
1003 Number of elements/data
mismatch
The number of data does not match the number of ele-
ments.
1100 Parameter error • Bit position is not 00.
• The write data is out of the setting range.
3003 Read-only error An attempt was made to write to variable type “C0.”
2203 Operation error • Attempted to write to a parameter in setup area 1
from setup area 0.
• CPU or EEPROM error
MRC
01
2
Bit position
00
22 4 0, 8, or 16
02
SRC
2
Variable type
4
Write start address
Number of elements
Write Data (for number of elements)
MRC
01
22 4
02
SRC Response code
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