Ametek CEM/Humox, Руководство пользователя

Страница: 115 / 136

Serial Communications
|
A-3
General Serial Communication Commands
This section provides general serial communication commands. Programming com-
mands and Factory setup commands are provided later in this chapter. Normally,
you will use these general serial communications commands.
Read Number (F)
This command allows you to 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
correspond to the type of variable you wish to read. The Variable Table shown in
Table A-1 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<CR>
Returned string: A20.9 %O2D4
Write Number (H)
This command allows you to set a value at the Series 2000 controller. The data sec-
tion of this command is a two digit hex number (00-FF) to point to the location to
write from the variable table (see Table A-1), followed by the value of the variable.
A simple acknowledge is returned if the command was accepted.
Read Date and Time (M)
This command is used to read the dates and times stored in the Series 2000 Con-
troller. The data consists of a single digit where 0 is used to read the current date
and time, 1 is used to read the date and time of the last calibration, and 2 is used to
read the date and time of the last verification. Date and time is returned as mm/dd/
yy hh:mm in 24 hour (military) time.
Set Date and Time (N)
This command is used to set the Series 2000 Controller current date and time. The
data string is of the form: mm/dd/yy hh:mm in 24 hour (military) time. Leading
zeroes are required, for example: 03/18/93 20:02.