Control Codes; Command Codes - Panasonic GT02 Manual

5.1.5 Control Codes

The control codes (header and terminator) are as follows.
Name
Header
Terminator
NAK

5.1.6 Command Codes

The command codes are as follows.
Command codes used for commands transmitted from external device to GT
Type Character
WDR
SRR
Read
PRR
WRR
WDW
BDW
DDW
SDW
Write
WRW
BRW
DRW
SRW
Command codes included in messages transmitted from GT to external device
Type Character
WDR
Sent
SRR
message
WRR
Note:
By touching the function switch to change the screen number on the GT screen, the value of the N+2
word device in the basic communication area changes from the value of the screen number before the
change to the value after the change. At that time, a message is sent by the "WDR" command to the
external device from the GT. Even when the GT internal device is not directly operated like this, the
information on the internal device changed by the GT internal operation may be sent to the external
device as a message.
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Character
? 3F
CR 0D
NAK 15
ASCII code
57 44
53 52
50 52
57 52
57 44
42 44
44 44
53 44
57 52
42 52
44 52
53 52
ASCII code
57 44
53 52
57 52
ASCII code
Beginning of a message.
Completion of a message.
Response when an error occurs.
52 Read data area in word unit
52 Read single relay bit
52 Read multiple relay bits
52 Read relay in word unit
57 Write data area in word unit
57 Write data area in byte unit
57 Write data area in digit unit
57 Write data area in bit unit
57 Write relay in word unit
57 Write relay in byte unit
57 Write relay in digit unit
57 Write relay in bit unit
52 Send information on data area in word unit
52 Send information on single relay bit
52 Send information on relay in word unit
Function
Function
Function