C: Beginning Control Code Word; Message Timing; Message Response Read Timing - Omron 3G3MV-PDRT2 User Manual

Message Communications
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C: Beginning Control Code Word

Specify the beginning word address of the area for storing the required control codes for message
communications. The control codes shown in the following table are required by DeviceNet Master
Units. Preset the data in consecutive words.
Word
address
15
C Number of command data bytes: 0000 to 00A0 hex (0 to 160 bytes)
Set the amount of data from the beginning S word.
C+1 Number of response data bytes: 0000 to 00A0 hex (0 to 160 bytes)
Set the size of the data storage area from the beginning D word.
C+2 Network address: 0000 to 007F hex (0 to 127)
(A setting of 0000 hex indicates the local network.)
When using CMND(490) with the CS/CJ Series, a network address must be set for each
DeviceNet Master Unit. The network address is edited using the routing table edit function of
a Peripheral Device (except for the Programming Console).
C+3 Command destination node address: 00 to 3F hex
(0 to 63)
Node address of the Master Unit
(The local node is specified if C+2 is set to 0000
hex and this byte is set to 00 hex.)
C+4 Response Communications port number: 0 to 7
C+5 Response monitor time:
Set at least 2 seconds for explicit messages.
Note Set "0" in word C+4 bit 15 to require a response or "1" to not require a response. Responses
are required for explicit messages, so set "0."

Message Timing

■
When executing CMND(490), an AND condition must be set that requires both the PLC's Network
Communications Enabled Flag and the Master Unit's Message Communications Enabled Flag to be
ON.
Execution
condition

Message Response Read Timing

■
Have messages read with the rising edge of the Network Communications Enabled Flag for each
communications port.
14 to 8
Set the communications port used for
DeviceNet.
0000 hex → 2 s
0001 to FFFF hex → 0.1 to 6553.5 s (unit: 0.1 s)
Network
Communications
Enabled Flag
Bits
Command destination Unit address
Set Master Unit (FE) or Master Unit's
unit number, 10 to 1F hex (0 to 15).
Number of retries: 00 to 0F hex (0 to
15)
Set the number of times to resend for
error response.
Online status
(or Message Communications Enabled Flag)
Chapter 6
7 to 0
S
D
C
6-5