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C200HW-SRM21-V1 Master Unit for CS-series, C200HX/C200HG/C200HE-(Z)E, and C200HS PLCs
Section 4-1
Indicators
The following table shows the meaning of the indicators.
4-1-2
Switch Settings
Rotary Switch
The Master Unit’s unit number (Special I/O Unit’s unit number) is set with the
rotary switch on the front of the Unit.
The highest possible unit number depends on the PLC model and the usable
node number setting set with pin 1 of the DIP switch.
Any unit number in the ranges above can be set, as long as the same unit
number has not been set on another Special I/O Unit mounted in the PLC. Set
the unit number with a small flat-blade screwdriver, being careful not to dam-
age the switch.
Indicator
Status
Meaning
RUN (green)
ON
The Unit is operating normally.
OFF
Indicates one of the following conditions:
The power is OFF, there is an I/O setting error, the CPU
Unit is in standby status, or there is a unit number setting
error.
SD (yellow)
ON
Data is being transmitted.
OFF
Data is not being transmitted.
RD (yellow)
ON
Data is being received.
OFF
Data is not being received.
ERC (red)
ON
A Slave has been withdrawn from communications.
(Communications error)
OFF
The Slaves are communicating normally.
IN/OUT (red)
ON
An error has occurred with an Output Slave.
OFF
An error has occurred with an Input Slave or all Slaves
are operating normally.
8421 (red)
ON/OFF
These indicators represent the four-digit binary slave
number of the Slave in which the error occurred.
MACHINE
No.
CPU Unit
Number of usable Master Units
Usable node number setting
(with DIP switch)
Unit number
setting range
CS1
16
(allocated words for 1 Special I/O
Unit (i.e., 10 words))
IN0 to IN7 and OUT0 to OUT7
0 to F
8
(allocated words for 2 Special I/O
Units (i.e., 20 words))
IN0 to IN15 and OUT0 to OUT15
0 to E
C200HX-CPU3
@
-(Z)E
/-CPU4
@
-(Z)E, C200HG-
CPU3
@
-(Z)E
/-CPU4
@
-(Z)E, All
C200HE/HS PLCs
10
(allocated words for 1 Special I/O
Unit (i.e., 10 words))
IN0 to IN7 and OUT0 to OUT7
0 to 9
5
(allocated words for 2 Special I/O
Units (i.e., 20 words))
IN0 to IN15 and OUT0 to OUT15
0 to 8
C200HX/HG-CPU5
@
-(Z)E/
CPU6
@
-(Z)E/CPU8
@
-(Z)E
16
(allocated words for 1 Special I/O
Unit (i.e., 10 words))
IN0 to IN7 and OUT0 to OUT7
0 to 9, A to F
8
(allocated words for 2 Special I/O
Units (i.e., 20 words))
IN0 to IN15 and OUT0 to OUT15
0 to 8, A to E