Parker Hannifin
142 ACR9000 Series Hardware Installation Guide
Alternate Mapping of Digital I/O
The current version of ACR90x0 firmware does not allow flags numbered
higher than 8191 to be accessed by the PLC programs. The digital I/O
mapping option (P32771) allows the first I/O bits of one or more nodes to
appear at the flags that had been used for the XIO boards of other ACR
products, i.e., P4104-P4111.
The value of P32771 is evaluated and implemented each time
the network is
started (via bit 11265). Values of P32771 less than or equal to zero do not
result in any re-mapping, so CANopen digital I/O appears at the original
location. Values of 1, 2, or 3 will result in the equal re-mapping of node 0
only, node 0 and 1 only, or all 4 nodes respectively. The meaning of P4104-
P4111 is given below for the various values of P32771.
XIO Flags
Parameters
P32771 = 1 P32771 = 2 P32771 >=3
4104 Node0 DI 0-31 Node0 DI 0-31 Node0 DI 0-31
4105 Node0 DO 0-31 Node0 DO 0-31 Node0 DO 0-31
4106 Node0 DI 32-63 Node0 DI 32-63 Node1 DI 0-31
4107 Node0 DO 32-63 Node0 DO 32-63 Node1 DO 0-31
4108 Node0 DI 64-95 Node1 DI 0-31 Node2 DI 0-31
4109 Node0 DO 64-95 Node1 DO 0-31 Node2 DO 0-31
4110 Node0 DI 96-127 Node1 DI 32-63 Node3 DI 0-31
4111 Node0 DO 96-127 Node1 DO 32-63 Node3 DO 0-31
Any digital input or output of any node that appears in this table will not
appear in the standard mapping of CANopen digital I/O. In other words, each
I/O bit is controlled by only one flag. In addition, this table represents the
maximum amounts of I/O that can appear at XIO flag parameters 4104-4111.
For example, if P32771= 1 and Node 0 only has 32 physical inputs and
outputs, only flag parameters 4104 and 4105 have meaning.
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