Specifications

RN: 5-62
RS3: Software Release Notes for P1 R4.2
Changes to RS3 Manuals
Standard engineering scaling is also available. The default values are 0
and 100. Alarms are configured with this scaling just as in the AIB block.
The default alarm value is “ none” and the default dead band is 1.00. If
the scaling is changed, the alarm and dead band numbers automatically
change to match the new scaling. Engineering Units and the Descriptor
also work as with the AIB block.
Description: Additional information was added after F igure 9.3.11
under this topic (page 9-3-23).
Configuring an I/O Block to Write a PLC Register Address
Figure 9.3.11A is an example of a controlled PLC flag write. The 16 PLC
coils starting at address 17 will be written to the PLC during controller
scans when the =1G--01/B register is at 100% of scale. The data written
to the PLC will be the user flags of register =1G--01/B.u.a to
=1G--01/B.u.p. The 16 PLC coils starting at address 17 will not be
written to the PLC when =1G--01/B register is at 0% of scale. This
allows the controller configuration to control when this PLC register is
written to. The =1G--01/B register needs to have a value of 100% of
scale for a minimum of two seconds for the controller to write the value
to the PLC.
I/O BLOCK CONFIGURATION 06-Aug-98 09:40:30
Address =1G002 Device Type PLCB
Block Tag ⇒ Block Type ⇒PLCB Mode → AUTO
Auto Lock ⇒no
Source ⇒ PLCMux/B
Addr 1G-01/B Data Type ⇒Flags PLC write Mask ⇒FFFFx
Value From Source 0000x Sample Time ⇒1 S Value to PLC 0000x
Write ⇒filter Sim
Tag⇒ Port ⇒ A PLC number ⇒1
Addr
Value From PLC 0.
ponmlkjihgfedcba 0000x Read →no PLC Word Address ⇒17
a: e: i: m:
b: f: j: n:
c: g: k: o:
d: h: l: p:
Hardware Alarm Code 0 Plant Unit ⇒0 Alarm Priority ⇒0
Figure 9.3.11A. Controlled PLC Flag Write
Figure 9 .3.11B is an example of a controlled PLC register write. T he
value of =1G--01/E will be written to the PLC r egister address 40005
during controller scans when user flag p of =1G--01/E is on
(=1G--01/E.u.p). The PLC r egister at address 40005 will not be written
to the PLC when user flag p of =1G--01/E is off. T his allows the
controller configuration to control when this PLC register is written to.
The user flag p of =1G--01/E needs to be on for a minimum of two
seconds for the controller to write the value to the PLC.