Omron SYSMAC CS Series Operation Manual page 136

Allocated CIO Area Words
Word n+2 [n = CIO 1,500 + (25 x unit number)]
Bit Name
00 Group address
to
07
08 Reserved by sys-
to tem
09
10 Unfreeze
11 Freeze
Transmitting the message is done by setting the Transmit Global-Control mes-
sage switch, bit 04 in CIO Word n, see 4-2-1 Software Switches 1 (Word n).
15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
Word n+2
Status Controlled
by
ON User Each bit in this range represents one of up to 8 groups of slaves. Bits 00
to Bit 07 will be included within the Global-Control message as group
address indicators.
If a Group number bit is set, the slave devices assigned to this group
number will process the Global-Control command.
OFF User If a Group number bit is not set, the slave devices assigned to this
group number will ignore the Global-Control command, except if none
of the Group address bits are set, i.e. Bit 00 to Bit 07 are all set to OFF.
This selection defines a Broadcast command, causing all slave devices
allocated to the PROFIBUS Master Unit to process the Global_ Control
command.
--- --- These bits are reserved by the system and will ignored by the Unit.
ON User If the Unfreeze bit is set, the Unfreeze command will be send to the tar-
geted slave devices.
The Unfreeze command releases the targeted slave devices from the
Freeze mode (see below).
OFF User The bit set to OFF indicates that the Unfreeze command will not be
transferred to the slave devices.
ON User The Freeze command forces the slave devices into the Freeze mode. In
this mode a slave device will not update its inputs to the Master and
continue to transmit the input data acquired before the Freeze com-
mand.
If the slave device is already in the Freeze mode, a new Freeze com-
mand will force the slave to update its inputs only once and continue to
transmit the new input data to the Master.
OFF User The bit set to OFF indicates that the Freeze command will not be trans-
ferred to the slave devices.
Unit operation
Section 4-2
Group select:
Group 1
Group 2
Group 3
Group 4
Group 5
Group 6
Group 7
Group 8
Unfreeze
Freeze
Unsync
Sync
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