333
I/O Link Units for CPM2C
Section 5-10
Note
1.
All 8 input and 8 output points use the same node number.
2.
The actual node number setting range depends on the PLC model in which
the Master is mounted as well as the Master’s settings. Refer to
for details.
Communications Mode Settings
The following communications modes are set with pin 5 of the DIP switch.
Note
1.
Only the C200HW-SRM21-V1, CQM1-SRM21-V1, SRM1-CO
@
-V2, and
CPM2C-S Master Units can be Long-distance Communications Mode.
2.
Make sure that the communications mode of the Slave is the same as that
of the Master Unit. If the communications modes are not the same, normal
communications with the Master Unit will not be possible. The operating
status of the Slave can be verified with LED indicators. Refer to
for details.
Hold/Clear Outputs for Communications Error
Pin 6 is used to set the output data status when a communications error
occurs, as shown in the following table.
Terminal Arrangement and Wiring
When viewed from the CPM2C CPU Unit, the 8 input and 8 output points
under the CompoBus/S I/O Link Unit are allocated to the I/O memory (input
and output bits) of the CPU Unit, as is the case with Expansion I/O Units. One
input and one output words are allocated. Actual I/O operations are not per-
formed for the I/O memory of the CPM2C CPU Unit, but it is performed for the
Pin 5
(DR)
Communica-
tions mode
Communica-
tions distance
Communica-
tions baud rate
Communica-
tions cycle time
OFF
High-speed Com-
munications
Mode
100 m max.
750 kbps
0.5 or 0.8 ms
ON
Long-distance
Communications
Mode
500 m max.
93.75 kbps
4.0 or 6.0 ms
Pin 6 (HOLD)
Setting
OFF
Clear output status
ON
Maintain output status
CompoBus/S
communications
CompoBus/S
communications
The BD H terminals are all
connected internally, as
are the BD L terminals.
