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ALLEN BRADLEY PLC
ANALOG OUTPUT SUBSCRIBER (FC 187)
A - 12
WBPEEUI240759A0
®
where:
x
File type:
3 = integer
4 = floating
5 = BCD
yyy
File number:
0 to 999 = all file types
Examples
Integer file at file number 100 = 3100.
Float file at file number 100 = 4100.
S14
Specification S14 defines the last two low order bytes of the
PLC device IP address. The IP address is in the format:
xxx.xxx.yyy.yyy
The specification is set to a decimal value derived from the
binary equivalent of yyy.yyy.
Example
IP address = 151.89.202.127. The last two bytes (202.127) convert to a
binary equivalent of:
1100101001111111
The decimal equivalent is 51,839 which is the value to enter in S14.
S15
Specification S15 is the periodic and aperiodic variable setting.
Periodic means that the MFP module will update the variable
value at every MFP module execution cycle. Aperiodic means
that the MFP module will update the variable value on an
exception report basis (i.e., as the values change). This option
reduces the number of network messages forwarded to the
PLC. In either case, the EDI module reads and forwards the
variable value each time the MFP module updates it.
S16
Specification S16 defines the stalled and nonstalled write
options.
Stalled writes means that EDI module will delay sending data
to the PLC on start-up of the EDI module, and during any rees-
tablishment of communications with the PLC. This delay
allows data alignment in the INFI 90 OPEN system to occur
before any writes are forwarded to the PLC.
Nonstalled writes means that EDI module will
not
delay in
sending data to the PLC on start-up of the EDI module, and
during any reestablishment of communications with the PLC.
This means that no time is allowed for data alignment to occur
in the INFI 90 OPEN system.
S17
Specification S17 defines the Allen Bradley element number (or
register address); range is from 0 to 999.