Rockwell Automation 1756-IH16ISOE ControlLogix Sequence of Events Module - Manual (Page 131)

Publication 1756-UM528A-EN-P - April 2004
Synchronizing CSTs Across Multiple Chassis C-3
Configuring 1756-SYNCH Modules in RSLogix 5000
The SynchLink module can be configured for multiple mastership
and slave roles with respect to the Coordinated System Time and the
SynchLink. The 1756-SYNCH modules used in the example on
page C-2 require specific configuration for the system to work.
Figure C.2 shows the example again but also show what the
configuration for each 1756-SYNCH module needs to be.
Figure C.2
For more information on how to configure the 1756-SYNCH
module, see ControlLogix SynchLink Module User Manual,
publication number 1756-UM521.
43743
Chassis #1 Chassis #2
1756-SYNCH - Gets CST from backplane and sends it to the
other 1756-SYNCH modules. Configure this 1756-SYNCH
module as shown below. 1756-SYNCH - Gets CST from 1756-SYNCH in local
chassis and sets it on the backplane in Chassis #2.
Configure this 1756-SYNCH module as shown below.
This setting is
required because the
module relays time
from its backplane to
the SynchLink. This setting is recommended.
In this case, you must make
sure the ControlLogix controller
is configured as the Chassis
CST Master. This setting is
required because the
module relays time
from its backplane to
the SynchLink. This Dependence on SynchLink setting is
optional for the 1756-SYNCH module. We
recommend that when you are using the
1756-SYNCH module with the Sequence of
Events module, you use the Required option.
CST propagated via 1756-SYNCHs
ControlNet