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Detailed Description of Services
Section 6-4
6-4-2 Write to Variable Area
This service writes to a variable area.
■ Command
Service Request PDU
■ Response
Service Response PDU
1. Variable Type and Write Start Address
Refer to Parameter List on page 193.
2. Bit Position
The EJ1 does not support bit access. Fixed to 00.
3. No. of Elements
Note The following values apply for the DA/9A variable types.
4. Response Codes
MRC
2
2
01
4
SRC
2
02
2
00
4
Variable
type
Write start
address
Bit
position
No. of elements
Write data
(for No. of elements)
No. of elements × 8 or 4
Write data length No. of elements
For double-word (8-digit) variable type 39 max. (0027H)
For word (4-digit) variable type 79 max. (004FH)
Write data length No. of elements
For double-word (8-digit) variable type 24 max. (0018H)
For word (4-digit) variable type 48 max. (0030H)
Response code Error name Cause
1002 Command too short The command is not long enough.
1101 Area type error The corresponding variable type does not exist.
1003 Number of elements/
data mismatch
The number of data does not match the number of
elements.
1100 Parameter error Bit position is not 00.Write data is out of setting
range.
2201 Operation error (2201) The command cannot be executed during operation.
3003 Read-only error An attempt was made to write to a read-only vari-
able.
7011 Operation error (7011) The command cannot be executed due to a device
error.
7013 Operation error (7013) The command cannot be executed because the
operation command cannot be received.
7014 Operation error (7014) The command cannot be executed during backup.
7015 Operation error (7015) The command cannot be executed during reset
(including startup).
7041 Operation error (7041) The command cannot be executed in manual opera-
tion mode.
7042 Operation error (7042) The command cannot be executed in tuning mode.
0000 Normal completion Processing was completed normally.
MRC
2
01
4
SRC
2
02
Response
code
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