DVP-ES2/EX2/EC5/SS2/SA2/SX2/SE&TP Operation Manual - Programming
Special
register
Function
D1120
COM2 (RS-485) communication protocol. Refer to the following table in
point 4 for protocol setting.
D1121
COM1 (RS-232) and COM2 (RS-485) PLC communication address when
PLC is slave.
D1122 COM2 (RS-485) Residual number of words of transmitting data.
D1123
When M1263 is OFF, the value in D1123 indicates the remaining bytes of
data to be received.
When M1263 is ON, the value in D1123 indicates the bytes of data that
are received.
D1124
COM2 (RS-485) Definition of start character (STX) Refer to the following
table in point 3 for the setting.
S
upported communication instruction: RS
D1125
COM2 (RS-485) Definition of first ending character (ETX1) Refer to the
following table in point 3 for the setting.
Supported communication instruction: R
S
D1126
COM2 (RS-485) Definition of second ending character (ETX2) Refer to
the following table in point 3 for the setting.
Supported communication instruction: R
S
D1129
COM2 (RS-485) Communication time-out setting (unit: ms). If users set
up time-out value in D1129 and the data receiving time exceeds the
time-out value, M1129 will be set ON and the error code K1 will be stored
in D1130. M1129 has to be reset manually when time-out status is
cleared.
D1130
COM2 (RS-485) Error code returning from Modbus. RS instruction is not
included.
Supported communication instructions: M
ODRD / MODWR / FWD / REV
/ STOP / RDST / RSTEF / MODRW
D1168
When M1263 is ON, the value in D1168 indicates a specific end word to
be seen as an interrupt request; unit: ms. It is suggested to set this value
shorter than what the timeout value is set in D1129.
When M1263 is OFF, and the received data is low-byte of a specific
word, the interrupt (I150) is triggered.
Supported communication instruction: R
S
D1256~D1295
For COM2 RS-485 MODRW instruction. D1256~D1295 store the sent
data of MODRW instruction. When MODRW instruction sends out data,
To Next Page
Loading...
