Parker Hannifin
The Node ID must be set by the user to match the node ID settings on the
actual nodes. All other node information is filled in by the controller after the
network is started. The node information is saved with the ESAVE command,
and user applications may use it to verify expected network configuration, or
make run time application decisions.
This information could serve as a source for a front-end software GUI that
displays bus and node status, although no configuration would be possible.
Another possibility would be to implement a sort of “Network Configuration
Verify” command that would allow the application to easily verify that the
configuration is the same every time.
In the table below, nodes are numbered 0-3, like all other ACR objects. This
is the node number, from the ACR90x0 point of view. The node ID is the
setting on that node’s DIP switch, and must be between 1 and 127, but may
not conflict with the chosen Master node ID.
Description/Node number 0 1 2 3
Node Id 33024 33040 33056 33072
Number of Digital Inputs (bytes) 33025 33041 33057 33073
Number of Digital Outputs (bytes) 33026 33042 33058 33074
Number of Analog Inputs 33027 33043 33059 33075
Number of Analog Outputs 33028 33044 33060 33076
Health Type (0=not present,
1=heartbeat, 2= lifeguarding)
33029 33045 33061 33077
Node state (0=dead, 1=live) 33030 33046 33062 33078
Flags for Extended Digital I/O
Each possible node will have two blocks of flag parameters, each 16
parameters in length, to accommodate the possible 512 bits each of
extended digital inputs and outputs. Flag parameter numbers are shown the
table below.
32 bit block type Starting
parameter
Ending
parameter
Node 0 digital inputs 4456 4471
Node 0 digital outputs 4472 4487
Node 1 digital inputs 4488 4503
Node 1 digital outputs 4504 4519
Node 2 digital inputs 4520 4535
Node 2 digital outputs 4536 4551
Node 3 digital inputs 4552 4567
Node 3 digital outputs 4568 4583
For each node, the lowest bit number for extended digital inputs block of that
node will correspond the lowest numbered digital input on that node on the
network. Numbering will proceed upward for all the digital inputs on that
numbered node. The same process occurs for the Digital Outputs. This
continues until the actual number of digital inputs and outputs on the network
138 ACR9000 Series Hardware Installation Guide
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