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Configuring FIELDBUS
3.1.5 199)FBUS DATA CONTRL
Control for loss of comms and endian control of fieldbus data.
PIN Parameter description
Range
Default
199
FIELDBUS DATA CONTROL
00 - 11
00
Parameter
199)FBUS
199)FBUS
DATA
DATA
CONTRL
CONTRL
specifies how data
exchanged with the PLC is handled.
Note that the PLX only reads this parameter at
start-up. A reset is required if it is changed.
Bit 0 (left most) sets the behaviour of the Cyclic
output data (from PLC) in the event of a loss in
communications.
1 The
GOTO
GOTO
PINs will remain at their last received
value (FREEZE)
0 The
GOTO
GOTO
PINs are set to zero (CLEAR)
Bit 1 (2nd from left) sets the byte order within the 16-bit
WORD. The Bit 1 setting is:
1 Low/High (little-endian)
0 High/Low (big-endian)
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199)FBUS DATA CONTRL
199)FBUS DATA CONTRL
A little-endian system stores
the least-significant byte of a
word at the smallest address.
A big-endian system stores
the most-significant byte of a
word at the smallest memory
address.
Typically, only PROFINET
and PROFIBUS fieldbuses
require the LITTLE-ENDIAN
data format.
3.1.6 202)FBUS NODE ID
Device address used by Profibus, DeviceNet and CANopen.
PIN Parameter description
Range
Default
202
FIELDBUS NODE ID
0 - 127
0
Parameter
202)FBUS
202)FBUS
NODE
NODE
ID
ID
is used to set a unique
address for the PLX on the fieldbus network.
This is only required for PROFIBUS, DeviceNet and
CANopen.
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202)FBUS NODE ID
202)FBUS NODE ID
