OPERATION MANUAL CompoBus/S

CJ1W-SRM21 Master Unit for CJ-series PLCs Section 4-3
Word Bit Name Function
+4 00 Registration Completed
Flag
00 to 07 Reserved for system
use.
08 Verification Error
Flag: Slave Missing
09 Verification Error
Flag: Unregistered
Slave in Network
10 Communications
Stopped Flag
This flag is turned ON when all registered Slaves have joined the network. If
all the registered Slaves have joined the network within the registered Slave
participation monitoring time this flag will turn ON even if unregistered Slaves
have also joined. The flag will not turn ON, however, if there are no Slaves
set in the Slave registration table. The flag will remain ON until the power is
turned OFF and ON again or the Unit is restarted.
This flag is turned ON under the following conditions.
Registered Slaves do not join the network within the registered Slave participation
monitoring time. When the Slave that caused the verification error is
joined in the network, the flag will automatically be turned OFF.
Check which Slave caused the error in the bit for verification error (Slave
missing) in Output Slave (first word + 6) or verification error (Slave missing)
in Input Slave (first word + 7).
This flag is turned ON when an unregistered Slave has joined the network.
The flag will remain ON until the power is turned OFF and ON again or the
Unit is restarted, even if the Slave that caused the verification error is
removed from the network.
Check which Slave caused the error in the bit for Output Slave verification
error (unregistered Slave in network) (first word + 8) or Input Slave verification
error (unregistered Slave in network) (first word + 9).
This flag is turned ON when the Master Unit is set to communications stop
mode and remote I/O communications stop due to a communications error,.
Once the flag has turned ON, the status remains until the power is turned
OFF and ON again or the Unit is restarted.
Check which Slave caused the error in the bits for communications stopped
node number (bits 00 to 07 of first word + 5) and communications stopped
Slave type (bit 15 of first word + 5).
11 to 14 Reserved for system
use.
15 Error Flag This flag is turned ON when any of the bits 08 to 10 are set to1(ON).
The flag is automatically turned OFF when all the bits 08 to 10 are turned
OFF.
+5 00 to 07 Communications
Stopped Node Number
08 to 14 Reserved for system
use.
15 Communications
Stopped Slave type
When the Master Unit is set to communications stop mode and remote I/O
communications stop due to a communications error, the node number of the
Slave that caused the error is stored as a 2-digit hexadecimal (00 to 0F: 1 to
15).
Check the Slave type (Output or Input) in the word for communications
stopped Slave type (bit 15 of first word + 5).
The node address stored will be held until the power is turned OFF and ON
again or the Unit is restarted.
When the Master Unit is set to communications stop mode and remote I/O
communications stop due to a communications error, the Slave type of the
Slave that caused the error is stored as follows:
0 (OFF): Output Slave
1 (ON): Input Slave
Check which Slave caused the error in the bits for communications stopped
node number (bits 00 to 07 of first word + 5)
When communications have stopped, the bit status is held until the power is
turned OFF and ON again or the Unit is restarted.
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