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Checking Operations of CS-series and CJ-series Master Units
Section 6-3
This status can be read out using a Programming Device (such as the CX-
Programmer) to monitor Slave status.
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
Usable Node Number is IN0 to IN15 and OUT0 to OUT15
Status Flag Functions
The status flags have the following functions. These flags are automatically
cleared to 0 when the power is turned ON or the system is restarted.
Active Output Slave Flags
These flags indicate whether the corresponding Output Slaves are active
nodes in the CompoBus/S communications.
Active Input Slave Flags
These flags indicate whether the corresponding Input Slaves are active nodes
in the CompoBus/S communications.
Output Slave Communications Error Flags
These flags indicate whether a communications error has occurred with the
corresponding Output Slaves.
PLC
Location of Status Area
CS-series and CJ-
series PLCs
First word = 2000 + unit number
×
10
First word
+ 8
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
0
Output Slave Communications Error Flags
Slave 7
0
Active Output Slave Flags
Slave 7
0
First word
+ 9
Bits
Input Slave Communications Error Flags
Slave 7
0
Active Input Slave Flags
Slave 7
0
First word
+ 16
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
0
Output Slave Communications Error Flags
Slave 7
0
Active Output Slave Flags
Slave 7
0
First word
+ 17
Bits
Input Slave Communications Error Flags
Slave 7
0
Active Input Slave Flags
Slave 7
0
First word
+ 18
Output Slave Communications Error Flags
Slave 15
8
Active Output Slave Flags
Slave 15
8
First word
+ 19
Input Slave Communications Error Flags
Slave 15
8
Active Input Slave Flags
Slave 15
8
Flag status
Meaning
0 (OFF)
The corresponding Slave is not participating in communications.
(OFF if the Slave didn’t participate even one time.)
1 (ON)
The corresponding Slave is participating in communications.
(Not changed even if the Slave is withdrawn from communications.)
Flag status
Meaning
0 (OFF)
The corresponding Slave is not participating in communications.
(OFF if the Slave didn’t participate even one time.)
1 (ON)
The corresponding Slave is participating in communications.
(Not changed even if the Slave is withdrawn from communications.)
Flag status
Meaning
0 (OFF)
Normal communications or the Slave is not participating in communi-
cations.
1 (ON)
Withdrawn from communications (communications error)
(This flag turns OFF automatically when the Slave rejoins communi-
cations.)
