Global-Control Message (Word N+2) - Omron SYSMAC CS Series Operation Manual

Allocated CIO Area Words
Bit Name
04 Transmit Global-
Control message
05 Reserved by sys-
to tem
07
08 Clear new diag-
nostics bits
09 Reserved by sys-
to tem
15
4-2-2

Global-Control Message (Word n+2)

Global-Control Multicast
Command
Global-Control Broadcast
Command
Group Address Setting
114
Status Controlled
by
OFF→ User Upon setting this switch the Unit will transmit one Global-Control mes-
ON sage over the network. The contents of the message is defined in CIO
Word n+2, see 4-2-2 Global-Control Message (Word n+2).
See Note 3.
OFF Unit The bit will be turned OFF by the Unit if the Global-Control message
has been transmitted.
--- --- These bits are ignored in the Unit. If set, they will be immediately
returned to OFF.
OFF→ User Upon setting this switch the Unit will clear all new diagnostics bit flags in
ON CIO Word n+17 to n+24. These bits indicate reception of new slave
diagnostics data.
Clearing the bit flags provides a clear indication for new messages to
arrive.
OFF Unit If the bit flags have been cleared, the Unit will reset this bit to OFF.
--- --- These bits are ignored in the Unit. If set, they will immediately be set to
OFF by the Unit.
Note 1. When switching the PROFIBUS Master Unit from one mode to another, it
will internally implement the mode transition via the intermediate modes,
e.g. from OFFLINE to OPERATE, will be performed as OFFLINE
→
CLEAR
Modes.
2. If two or more mode switches, i.e. Bit 00 to 03, have been set at the same
time, or the Unit can not implement the mode change due to an invalid con-
figuration, the command will be ignored and the Mode command error flag
in the Master Status 2 word (CIO Word n+6) will be turned ON. See also
section 4-2-5 Master Status 2 (Word n+6).
3. If the PROFIBUS Master Unit is not in the correct mode, i.e. the Unit is in
OFFLINE or STOP mode, the Transmit Global-Control message command
will be ignored, but the bit will remain ON. The command will be sent when
the Unit transitions to the correct mode, unless the user clears the Bit. No
error indication will be generated.
A PROFIBUS Global-Control message can be transmitted by the Unit on user
demand to either
• one or more groups of slave devices allocated to the PROFIBUS Master
Unit (Multicast command), or
• all slave devices allocated to the PROFIBUS Master Unit (Broadcast com-
mand).
The number of the group to which each slave device belongs, is defined in its
parameterization message. Only the slave devices assigned to the groups to
which the Global-Control message is addressed will process the command.
The group address to send the message to is specified in bit 00 through bit
07. Selecting specific groups of slave devices (i.e. a Multicast command),
requires setting of one or more bits in this range to ON. Selecting all slaves
(i.e. a Broadcast command) requires all bits in this range to be set to OFF.
The Global-Control command flags are specified in the bit 10 through bit 13.
Unit operation
→
OPERATE. See also section 1-1-7 Network Operation
Section 4-2
→
STOP