Unit Status (Word N+4) - Omron CS1W-PRM21 Operation Manual

Allocated CIO Area Words
Bit Name
13 Sync
14 Reserved by sys-
tem
to
15
Freeze mode
Sync mode
4-2-3

Unit Status (Word n+4)

90
Status Controlled
by
ON User The Sync command forces the slave stations in to the Sync mode. In
this mode the slave station will not update its outputs and continues to
use the output data received before the Sync command.
If the slave station is already in the Sync mode, a new Sync command
will force the slave to update its outputs only once, with the most recent
output data received from the Master.
OFF User The bit set to OFF indicates that the Sync command will not be trans-
ferred to the slave stations.
--- --- These bits are reserved by the system and will ignored by the Unit.
The User can set the Freeze and Unfreeze bits at the same time, and both will
be transmitted to the targeted slave stations at the same time but the resulting
action at the slave station is defined in the PROFIBUS standards.
Bit 10 Bit 11
OFF
OFF
ON
ON
The User can set the Sync and Unsync bits at the same time, and both will be
transmitted to the targeted slave stations at the same time, but the resulting
action at the slave station is defined in the PROFIBUS standards.
Bit 12 Bit 13
OFF
OFF
ON
ON
The Unit status word contains all the status and error flags concerning the
Unit itself, as well as error flags, which indicate the presence of error flags in
the Master and Slave Status Words. All bits are controlled by the Unit.
15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
Word n+4
Unit operation
Resulting action at slave
OFF No change in function
Slave station will be in Freeze mode
ON
OFF Slave station will be in Unfreeze mode
ON Slave station will be in Unfreeze mode
Resulting action at slave
OFF No change in function
ON Slave station will be in Sync mode
OFF Slave station will be in Unsync mode
ON Slave station will be in Unsync mode
Section 4-2
Unit error flag
Master error flag
Error log contains new errors
Parameter transfer in progress
Local parameter storage error
Local parameter load error
File read error
Error log storage error