4.8 Data exchange example — Transparent format
In this example, we use Siemens S7-300 PLC (as a PROFIBUS master)
、
a GW-
7557 (as a PROFIBUS slave/HART master) and a HART slave device to read
primary variable of HART slave device.
Step 1: Copy the GSD file (Please refer to the section 4.2) and assign the
GW-7557 a valid station address (Please refer to the section 2.4).
Step 2: Connect the RS-232 port of the GW-7557 module to a COM port of
the PC and the PROFIBUS port to a PROFIBUS master (
Figure 23
).
Figure 23 Wiring diagram between PC and GW-7557
Step 3: Set the parameters of the GW-7557. We just need to change “HART
Frame Format” to Transparent and the default setting is being used
in the other parameters for this example. Please refer to section 4.3
the Configuration of the common parameters. The users can set
parameters as shown in the below (
Figure 24
).
GW-7557 PROFIBUS/HART Gateway User Manual
(Version 1.00, Dec/2011)
PAGE: 36
