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Serial Communications | A-3
General Serial Communication Commands
This section provides general serial communication commands. Programming
commands and factory‑setup commands are provided later in this chapter. Gener‑
ally, you will use these general serial communications commands.
read number (F)
Read the value of a variable stored in the Series 2000 Controller.
The data section of this command is a number from 00‑FF. These numbers cor‑
respond to the type of variable you want to read. The
Variable Table
shown in
Figure A‑3 provides a list of these variables and their location codes. If a variable
is selected beyond the end of the Variable Table shown, an error will be returned.
The value returned is followed by a text string for the units, where applicable.
example:
Request oxygen with the following string: >>FEF0536

Returned string : A20.9 %O2D4
Write number (H)
Set a value at the Series 2000 controller.
The data section of this command is a two‑digit hex number (00‑FF) to point to
the location to write from the Variable Table (see Figure B‑1), followed by the
value of the variable. A simple acknowledge is returned if the command was ac‑
cepted.
Calibrate (G)
Start an automatic calibration or verify cycle.
The data section is either:
0 ‑ Calibrate
1 ‑ Verify
2 ‑ Primary cal