USING THE SNAP PID MODULE WITH OPTOCONTROL
SNAP PID Module User’s Guide
15
Accessing PID Variables
PID variables from the SNAP-PID-V are stored in the SNAP-B3000-ENET’s memory map, and can
be accessed from OptoControl using the commands listed below. See Opto 22 form 725, the
OptoControl Command Reference,
for more information about these commands.
•
Read Numeric Variable from I/O Memory Map
•
Write Numeric Variable to I/O Memory Map
•
Read Numeric Table from I/O Memory Map
•
Write Numeric Table to I/O Memory Map
Finding a PID Module Memory Map Address
To determine the hexadecimal memory map address for a particular PID module variable:
1.
Open ioManager and select the SNAP Ethernet brain on the same rack as the PID module.
2.
Click the PID button and select Module from the submenu.
3.
At the top of the PID Module window select the PID module that will be used with
OptoControl.
The memory map address appears to the right of the variable’s description.
