Dressler CESAR 1312, User Manual

Page: 84 / 194

4-50 Communication Interfaces CESAR 1312 (E)
Dressler
®
HF-Technik GmbH
AE Bus Communications Transaction Example
Figure 4-41 illustrates the steps in an example communications transaction
between a host computer and a CESAR generator.
Figure 4-41. Communications transaction example
Host Port—PROFIBUS
This section describes the PROFIBUS host port. For information on the RS-
232 host port, see “Host Port—RS-232 With AE Bus” on page 4-43 . For
information on the Ethernet host port, see “Host Port—Ethernet (Modbus/
TCP)” on page 4-56 .
Note: To determine which option you have, see “Understanding Model 1312
Options” on page 1-2 .
The PROFIBUS host port on the CESAR generator consists of a 9-pin,
female, subminiature-D connector, two status LEDs, and two rotary address
switches located beside the connector. This section describes the
PROFIBUS
status LEDs, pins, and communication protocol. It also includes a list and
description of the
PROFIBUS commands.
Note: Dressler’s PROFIBUS protocol does not support the following functions:
address changing, freeze/unfreeze modes, or sync modes.
Figure 4-42. PROFIBUS port connector
Host Computer
CESAR generator