SECTION 2 CompoWay/F Communications Procedures
2-10
(5) Precautions
● Alarm Function
Even though alarms are not displayed on the Controller’s display, they
function normally in communications.
■ Write Variable Area
This service writes data to a variable area.
Service Request PDU
Service Response PDU
(1) Variable Type and Write Start Address
For details on variable types and write start addresses, see SECTION 3
Communications Data for CompoWay/F and SYSWAY.
(2) Bit Position
The E5CN does not support bit access. Fixed to “00.”
(3) Number of Elements
(4) Response Code
Normal Completion
110B Response too long The number of elements is
larger than “0002.”
1100 Parameter error Bit position is not “00.”
2203 Operation error EEPROM error
Response code Error name Cause
Number of
elements
Processing
0000 The write operation is not performed (do not append write
data to the service request PDU) and processing ends in
“normal completion.”
0001 to 0002 The write operation is performed and processing ends in
“normal completion.”
Response code Name Description
0000 Normal completion No errors were found.
MRC SRC
0
222 4 2 4
102 00
Variable
type
Start
write address
Bit
position
Number of
elements
Write Data (for
number of elements)
0, 8, or 16
MRC SRC
0
22 4
102
Response
code