Plc Communications Data Areas - Omron SYSMAC CS1W-ETN21 Operation Manual

Communicating between OMRON PLCs
Note
6-6-2

PLC Communications Data Areas

Note
138
Item
Data contents The following data is sent and received with the execution of
each instruction.
SEND(090):
Sends request for remote node to receive data, and receives
response data.
RECV(098):
Sends request for remote node to send data, and receives
response data.
CMND(490):
Sends any FINS command and receives response data.
Communications Ports 0 to 7 (Eight transmissions can occur simultaneously.)
port number
Response moni- 0000:
tor time 2 s (default)
0001 to FFFF:
0.1 to 6,553.5 s in 0.1-s increments (specified by user)
Number of retries 0 to 15 retries
1. The maximum data length is limited to 512 bytes for data exchange be-
tween the PLC and SYSMAC LINK Systems or the PLC and SYSMAC
BUS/2 Remote I/O Systems.
2. When broadcasting, do not require a response.
Use the FINS/UDP method for broadcasting.
The following table shows the I/O data areas involved when SEND(090) and
RECV(098) are used.
Area
CIO Area
Work Area
Holding Area
Auxiliary Area
Timer Area
Counter Area
DM Area
EM Area
1. Data cannot be written to words A000 to A447 in the Auxiliary Area.
2. A maximum of 13 banks in the EM Area can be used. For details regarding
the EM Area, refer to the operation manual for the PLC that is used.
Section 6-6
Specifications
Range
CIO 0000 to CIO 6143
W000 to W511
H000 to H511
A000 to A959 (See note 1.)
T0000 to T4095
C0000 to C4095
D00000 to D32767
E00000 to E32767 (See note 2.)