Specifications

RN: 5-60
RS3: Software Release Notes for P1 R4.2
Changes to RS3 Manuals
Table 9.3.9. PLCB I/O Block Configuration Fields (continued)
Field Allowable Entries
(1)
Description
Access
Level
Data Type
CONF
T ype of word that is being read from or written to
the PLC.
Flags, BCD3,
BCD4, S Int, U Int,
S Int Scale, U Int
Scale, BCD3 Scale,
BCD4 Scale,
Float
(2)
For more information,
see Table 9.3.12
Block Out
NA
The value displayed is the block output scaled
according to the engineering scaling values.
Display only
PLC Zero
(3)
CONF
Enter the number received from the PLC when
the measured quantity is at its minimum in-range
value.
SeeTable9.3.x
Default = 0
PLC Max
(3)
CONF
Enter the number received from the PLC when
the measured quantity is at its maximum in-range
value.
SeeTable9.3.x
Default = 1
Eng Zero
(3)
CONF
Value to be displayed when the PLC provides a
number equal to the value entered in the PLC
Zero field.
Max = 999999
Min = --999999
Default = .00
Eng Max
(3)
CONF
Value to be displayed when the PLC provides a
number equal to the value entered in the PLC
Max field.
Max = 999999
Min = --999999
Default = 100.00
Eng Units
(3)
CONF
Engineering units assigned with the block output.
Maximum of 8
characters
Hardware Alarm
Code
NA
Indicates a hardware fault. For information on
alarm messages, see the Alarm Messages
Manual.
Display only
(3)
Displayed only for scaled PLCBs.
Description: New sections on scaling PLC blocks and types of PLC
scaling are to be added after “Linking I/O Block Bit Data to a
ControlBlock” (page 9-3-16).
Scaling PLC Blocks
Scaling can only be applied when “Normal” or “F ilter” (anything but “no”)
is selected in the “Read” field and one of the scaled data types is
selected. You can set engineering scaling on PLC input registers.
1. Put the block in AUTO mode.
2. Make sure the Data Type field is set to BCD3 Scale, BCD4 Scale,
U Int Scale, or S Int Scale.
3. Type in the appropriate units in the Eng Units field.
4. Set the Eng Zero and Eng Max values (see F igure 9.3.x).