Omron CPM2C User Manual

72
Unit Components Section 2-2
2-2-5 CPM2C-SRT21 CompoBus/S I/O Link Unit
1,2,3... 1. CompoBus/S Terminals
Include the CompoBus/S communications data high/low terminal, and NC
terminals. Power is supplied to the Unit internally.
2. DIP Switch
The DIP switch sets the Unit’s node address, sets the communications
mode, and determines whether or not the outputs will be cleared in the
event of a communications error.
Note The Long-distance Communications Mode can be used only when connected
to one of the following Master Units: C200HW-SRM21-V1, CQM1-SRM21-V1,
SRM1-C0@-V2, or CPM2C-S.
3. LED Indicators
These indicators show the status of CompoBus/S communications.
4. Expansion I/O Connector (Input)
Connects the CompoBus/S I/O Link Unit to the CPU Unit or the previous
Expansion I/O Unit or Expansion Unit.
5. Expansion I/O Connector (Output)
Connects the CompoBus/S I/O Link Unit to the next Expansion I/O Unit or
Expansion Unit, if necessary. Up to 5 Expansion I/O Units and Expansion
Front View
Right Side
1. CompoBus/S terminals
2. DIP switch
4. Expansion I/O connector (input)
3. LED indicators
6. Locking lever
6. Locking lever
5. Expansion I/O connector (output)
Pin(s) Function
1 to 4
(labeled
1, 2, 4,
and 8)
These pins set the Unit’s node address using the DIP switch pins as
binary digits. (1 = ON)
0: 0000 1: 0001 2: 0010 3: 0011
4: 0100 5: 0101 6: 0110 7: 0111
8: 1000 9: 1001 10: 1010 11: 1011
12: 1100 13: 1101 14: 1110 15: 1111
DR ON: Long-distance Communications Mode
OFF: High-speed Communications Mode
(See note.)
HOLD ON: Retain inputs when a communications error occurs.
OFF: Clear inputs when a communications error occurs.
Indicator Status Meaning
COMM
(yellow)
ON Communications in progress.
OFF Communications error or stopped.
ERR
(red)
ON A communications error has occurred.
OFF Indicates normal or no communications.

Omron CPM2C Specifications

General

Brand	Omron
Model	CPM2C
Category	Controller
Language	English