July 2013 9.6 Operands 1753
9.6.5 Fast PLC inputs
Fast PLC inputs are possible on the UEC 1xx, UMC 1xx and slots of a PL 6xxx.
Only the first four slots of a PL 6xx can be used, however. The fifth slot and
the successive slots (on PL 6x06, PL 6x08) must not be defined as fast PLC
inputs.
With MP4130 you can define PLC inputs that are not interrogated within the
PLC cycle, but rather in the control loop cycle. Markers M4590 to M4593 show
the current state of the fast PLC inputs.
You must activate the fast PLC inputs in the PLC program with W522 bit 2 to
bit 5.
For the iTNC to identify with certainty a signal change, the signal duration at
the fast PLC input must last a minimum of 4 ms.
MP4130 Numbers of fast PLC inputs
Input: 0 to 20 000 [no. of the PLC input]
-1: Function inactive
MP4130.2 Fast PLC input sets marker M4590
MP4130.3 Fast PLC input sets marker M4591
MP4130.4 Fast PLC input sets marker M4592
MP4130.5 Fast PLC input sets marker M4593
MP4131.2-5 Activation criterion for fast PLC inputs
Input: 0: Activate at LOW level
1: Activate at HIGH level
Set Reset
W522 Activate the high-speed PLC inputs
Bit 2: Fast PLC input defined in
MP4130.2
Bit 3: Fast PLC input defined in
MP4130.3
Bit 4: Fast PLC input defined in
MP4130.4
Bit 5: Fast PLC input defined in
MP4130.5
PLC PLC
Set Reset
M4590 Status of fast PLC input from
MP4130.2
NC PLC
M4591 Status of fast PLC input from
MP4130.3
NC PLC
M4592 Status of fast PLC input from
MP4130.4
NC PLC
M4593 Status fast PLC input from MP4130.5 NC PLC
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