C. Gerhardt GmbH & Co. KG
19
On-line mode
The RS 485 interface allows quality assurance conforming to ISO/
GLP. It enables up to 32 different instruments (including other
makes) to be connected between each other.
The on-line mode provides the following possibilities:
1. Connection of personal computer for controlling and monito-
ring in conjunction with the GerLab® user program.
2. Connection of PC for controlling and monitoring in conjunction
with a customerised terminal program, i.e., Telix (MS-DOS),
Terminal (for Windows). With the assistance of the interface a
program, based on the customers’ needs, can be written, too.
3. Synchronous working of various equipment. The programming
and controlling is effected via a system, which has been ap-
pointed semi master.
The working instructions for the synchronous mode are as follows:
– Connect all instruments with the interface cables RS 485
– Provide the last unit connected with the terminator AST
– Activate the on-line key of each instrument (control LED illu-
minated)
– Determine the semi master by pressing the keys „+“ (keep
pressed) and on-line (control LED flashes)
By pressing this key-combination once more you can return to the
simple on-line position (Control LED illuminated).
Synchronous mode
Control via PC
PROGRAMMING
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