Compobus/S I/O Link Unit Components - Omron CPM1A Operation Manual

Unit Components
! Caution

2-2-5 CompoBus/S I/O Link Unit Components

4. Expansion I/O Unit Connecting Cable
1, 2, 3...
NODE ADDRESS
ON
SW1
4. Expansion I/O Connecting Cable
Connects the Temperature Sensor Unit to the expansion connector on the
PC's CPU Unit, an Expansion I/O Unit, or another Expansion Unit. The cable
is connected to the Temperature Sensor Unit and cannot be removed.
Do not touch the expansion I/O connecting cable while the power is being sup-
plied in order to prevent any malfunction due to static electricity.
5. Expansion Connector
Connects to an additional Expansion I/O Unit or another Expansion Unit.
The following CompoBus/S I/O Link Unit is available: CPM1A-SRT21.
1. CompoBus/S Terminals
Include the CompoBus/S communications data high/low terminal, commu-
nications power supply +/– terminals, and NC terminals. Power is supplied
to the Unit internally, so the power supply terminals can be used as relay
terminals.
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.
Pin(s)
1 to 4 These pins set the Unit's node address using the DIP switch pins as
(labeled binary digits. (1 = ON)
1, 2, 4,
0: 0000
and 8)
4: 0100
8: 1000
12: 1100
DR ON: Long-distance Communications Mode
OFF: High-speed Communications Mode
(See note.)
HOLD ON: Retain outputs when a communications error occurs.
OFF: Clear outputs when a communications error occurs.
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, or
SRM1-C0j-V2.
2. DIP switch
3. LED indicators
5. Expansion connector
1. CompoBus/S terminals
Function
1: 0001 2: 0010
5: 0101 6: 0110
9: 1001 10: 1010
13: 1101 14: 1110
Section 2-2
3: 0011
7: 0111
11: 1011
15: 1111
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