OPERATION MANUAL CompoBus/S

Checking Operations of CS-series and CJ-series Master Units Section 6-3
Status Area Location and
Configuration
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This status can be read out using a Programming Device (such as the CX-
Programmer) to monitor Slave status.
The location and configuration of the status area is shown in the following
table.
PLC Location of Status Area
CS-series and CJseries
PLCs
First word = 2000 + unit number × 10
Usable Node Number is IN0 to IN7 and OUT0 to OUT7
15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0 Bits
First word Output Slave Communications Error Flags
+ 8
Slave 7 0
First word Input Slave Communications Error Flags
+ 9
Slave 7 0
Active Output Slave Flags
Slave 7 0
Active Input Slave Flags
Slave 7 0
Usable Node Number is IN0 to IN15 and OUT0 to OUT15
15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0 Bits
First word Output Slave Communications Error Flags
+ 16
Slave 7 0
First word Input Slave Communications Error Flags
+ 17
Slave 7 0
First word Output Slave Communications Error Flags
+ 18
Slave 15 8
First word Input Slave Communications Error Flags
+ 19
Slave 15 8
Active Output Slave Flags
Slave 7 0
Active Input Slave Flags
Slave 7 0
Active Output Slave Flags
Slave 15 8
Active Input Slave Flags
Slave 15 8
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.
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(Not changed even if the Slave is withdrawn from communications.)
Active Input Slave Flags
These flags indicate whether the corresponding Input Slaves are active nodes
in the CompoBus/S 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(Not changed even if the Slave is withdrawn from communications.)
Output Slave Communications Error Flags
These flags indicate whether a communications error has occurred with the
corresponding Output Slaves.
Flag status Meaning
0 (OFF) Normal communications or the Slave is not participating in communications.
1 (ON) Withdrawn from communications (communications error)
(This flag turns OFF automatically when the Slave rejoins communications.)