Alicat PROFIBUS User Manual
Page 9
5.3 Unit Commands
Unit commands are commands that go directly to the meter/controller and
include all commands that an Alicat meter/controller will normally respond to.
It is important to note that when the PROFIBUS interface is in Data Exchange
mode, the unit acts as is if it were in a streaming mode and does not output
data frames to the RS-232 port.
Because the meter/controller is in streaming mode, unit commands must be in
the format for a streaming meter/controller.
An example for reading registers: *R65 will return the contents of register 65
(R65 = ######).
Because the meter/controller is in streaming mode when it is communicating
on the PROFIBUS it cannot participate in a multi-drop RS-232 network of
Alicat meter/controllers.
However, if the unit is not communicating on the PROFIBUS, its address can
be set and it will be able to participate normally in a multi-drop RS-232 network
of Alicat meter/controllers.
If you would like additional information regarding the use of this product,
please contact:
Alicat Scientific, Inc.
7641 N Business Park Drive
Tucson, Arizona 85743
USA
Ph. 520-290-6060
Fax 520-290-0109
email: [email protected]
Web site: www.alicatscientific.com