PCD0
Technical data’s and circuit diagrams for the modular system
Page 102
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SAIA-Burgess Controls Ltd.
(HB_PCD0 26 766_E2.DOC)
26/766 E2
4.19.6
Process data from the module to the PLC (inputs)
5 words are transmitted to the PLC.
Word 1
Word 2
Word 3*
Word 4*
Word 5
Counter value
Counter 1 (MSB)
Counter value
Counter 1 (LSB)
Counter value
Counter 2 (MSB)
Counter value
Counter 2 (LSB)
Input/output states*
*Word 3 and 4 are not transmitted if the data width is set to 3. Word 5 will then be transmitted as word 3.
Single bits are used differently, see below.
Input/output states
Bit values word 5
Description
xxxx xxxx xxxx xxx0 b
Message homing counter 1 reset
xxxx xxxx xxxx xxx1 b
Homing counter 1 successfully completed
xxxx xxxx xxxx xx0x b
Message positioning counter 1 reset
xxxx xxxx xxxx xx1x b
Positioning counter 1 successfully completed
xxxx xxxx xxxx x0xx b
State of tracking signal N counter 1 is 0 (0 V)
xxxx xxxx xxxx x1xx b
State of tracking signal N counter 1 is 1 (24 V)
xxxx xxxx xxxx 0xxx b
State of End+ counter 1 is 0 (0 V)
xxxx xxxx xxxx 1xxx b
State of End+ counter 1 is 1 (24 V)
xxxx xxxx xxx0 xxxx b
State of End- counter 1 is 0 (0 V)
xxxx xxxx xxx1 xxxx b
State of End- counter 1 is 1 (24 V)
xxxx xxxx xx0x xxxx b
State of Move+/Direction counter 1 is 0 (0 V)
xxxx xxxx xx1x xxxx b
State of Move+/Direction counter 1 is 1 (24 V)
xxxx xxxx x0xx xxxx b
State of Move-/Move counter 1 is 0 (0 V)
xxxx xxxx x1xx xxxx b
State of Move-/Move counter 1 is 1 (24 V)
xxxx xxxx 0xxx xxxx b
State of Speed counter 1 is 0 (0 V)
xxxx xxxx 1xxx xxxx b
State of Speed counter 1 is 1 (24 V)
xxxx xxx0 xxxx xxxx b
Message homing counter 2 reset
xxxx xxx1 xxxx xxxx b
Homing counter 2 successfully completed
xxxx xx0x xxxx xxxx b
Message positioning counter 2 reset
xxxx xx1x xxxx xxxx b
Positioning counter 2 successfully completed
xxxx x0xx xxxx xxxx b
State of tracking signal N counter 2 is 0 (0 V)
xxxx x1xx xxxx xxxx b
State of tracking signal N counter 2 is 1 (24 V)
xxxx 0xxx xxxx xxxx b
State of End+ counter 2 is 0 (0 V)
xxxx 1xxx xxxx xxxx b
State of End+ counter 2 is 1 (24 V)
xxx0 xxxx xxxx xxxx b
State of End- counter 2 is 0 (0 V)
xxx1 xxxx xxxx xxxx b
State of End- counter 2 is 1 (24 V)
xx0x xxxx xxxx xxxx b
State of Move+/Direction counter 2 is 0 (0 V)
xx1x xxxx xxxx xxxx b
State of Move+/Direction counter 2 is 1 (24 V)
x0xx xxxx xxxx xxxx b
State of Move-/Move counter 2 is 0 (0 V)
x1xx xxxx xxxx xxxx b
State of Move-/Move counter 2 is 1 (24 V)
0xxx xxxx xxxx xxxx b
State of Speed counter 2 is 0 (0 V)
1xxx xxxx xxxx xxxx b
State of Speed counter 2 is 1 (24 V)
x:
any bit value
b:
binary representation
Depending on word 5 of the control data a bit can
alternatively also function as a feedback bit.