1-2
Section
DeviceNet Functions
5
Message Communications
Master Unit
Master Unit
PT (DeviceNet
Interface Unit)
IOWR
Communications Instructions
Master Unit model
Send
Receive
FINS
commands
CVM1, CV Series
SEND(192)
RECV(193)
CMND(194)
CS1 Series,
C200HZ/HX/HG/HE
None
None
IOWR
C200HS
---
Item
Master Unit model
Capacity
Max. number of nodes per Master
CVM1, CV Series
8 nodes
Unit for message communications
using FINS commands
CS1 Series,
C200HZ/HX/HG/HE
8 nodes
C200HS
Not supported
Max. number of nodes per Master
CVM1, CV Series
63 nodes
Unit for message communications
using explicit messages
CS1 Series,
C200HZ/HX/HG/HE
63 nodes
C200HS
Not supported
Max. message length
CVM1, CV Series
SEND(192):
152 bytes
RECV(193): 156
bytes
CMND(194): 160 bytes (starting with command code)
CS1 Series,
C200HZ/HX/HG/HE
IOWR:
160 bytes (starting with command code)
Reference 1. When sending explicit messages from an OMRON Master Unit, use the EX-
PLICIT MESSAGE SEND (28 01) FINS command.
2. The SEND and RECV instructions are used for communications between
OMRON Master Units; they are not used with the DeviceNet Interface Unit.
3. Explicit messages cannot be sent when a C200HS is used as the Master.
