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Checking Operations for CS-series, C200HX/C200HG/C200HE-(Z)E, and C200HS Master Units
Section 6-2
The following table shows some examples of node number displays.
6-2-2
Checking Status Using Status Information
When using CS-series, C200HX/C200HG/C200HE-(Z)E, or C200HS Master
Units, information on active Slave status and communications error status is
stored for each Slave in the status area of the PLC’s Special I/O Unit Area.
Status Area Location and
Configuration
The location and configuration of the status area is shown in the following
table.
Usable Node Number is IN0 to IN7 and OUT0 to OUT7
Two words are used for flags when the max. number of Slaves setting is 16.
Usable Node Number is IN0 to IN15 and OUT0 to OUT15
Four words are used for flags when the max. number of Slaves setting is 32.
Situation
Indicator status
Possible remedy
ERC
I/O
8
4
2
1
Communications error in the Input
Slave with node number 13
ON
OFF
ON
ON
OFF ON
Check the communications cable to Input
Slave 13 and the status of the Slave itself.
Communications error in the Output
Slave with node number 6
ON
ON
OFF ON
ON
OFF Check the communications cable to Output
Slave 6 and the status of the Slave itself.
Communications error in the Input
Slave with node number 0
ON
OFF
OFF OFF OFF OFF Check the communications cable to Input
Slave 0 and the status of the Slave itself.
A communications error occurs in
the Output Slave with node number
11 after an error occurs in the Input
Slave with node number 3.
ON
OFF
OFF OFF ON
ON
First, check the communications cable to
Input Slave 3 and the status of the Slave
itself.
Once the error in Input Slave 3 is cleared,
the display will show the error in Output
Slave 11 and this error can be cleared.
PLC
Location of Status Area
CS-series PLCs
First word = 2000 + unit number
×
10
C200HX/C200HG/
C200HE-(Z)E, and
C200HS PLCs
Unit numbers 0 to 9:
First word = 100 + unit number
×
10
Unit numbers A to F (10 to 15):
First word = 400 + (unit number – 10)
×
10
PLC
Location of Special I/O Unit Area
CS-series PLCs
First word = 2000 + unit number
×
10
C200HX/C200HG/
C200HE-(Z)E, and
C200HS PLCs
Unit numbers 0 to 8:
First word = 100 + unit number
×
10
Unit numbers A to E (10 to 14):
First word = 400 + (unit number – 10)
×
10
First
word + 8
First
word + 9
Bits
Active Output Slave Flags
Slave 7 - - - - - - - - - - - - - - - - - - - - - - - 0
Active Input Slave Flags
Slave 7 - - - - - - - - - - - - - - - - - - - - - - - 0
Output Slave Communications Error Flags
Slave 7 - - - - - - - - - - - - - - - - - - - - - - - 0
Input Slave Communications Error Flags
Slave 7 - - - - - - - - - - - - - - - - - - - - - - - 0
