B&B Electronics GW-7553 - Manual User Manual

Page 53

GW-7553 PROFIBUS/Modbus TCP Gateway User Manual (Version 1.00, Dec/2008) PAGE: 53

Step 7: Set the network settings of the GW-7553 by PROFIBUS/Modbus
gateway utility (please refer section 5.5 & 5.6). The settings of the GW-
7553 must have the same domain and different IP with the PC (ex: PC’s
IP=192.168.0.106, MASK=255.255.0.0; GW-7553’s IP=192.168.0.107,
MASK=255.255.0.0).

Step 8: Reset the power of the GW-7553 for an active setting.

4.9.1 Receiving data from a Modbus Master device

-- Start the test utility “MBTCP” (figure 53) on the PC.

This utility simulates a Modbus Master device and is on the web site in the
following directory:

http://ftp.icpdas.com.tw/pub/cd/8000cd/napdos/modbus/modbus_utility/

(1) Set the IP address of the GW-7553
(2) Click the connect button

Figure53 MBTCP Utility

--Send Command to write DO of the GW-7553

The user needs to input command (” 01 0F 00 00 00 10 02 FF FF”) here and
click button to send Modbus command: “01 0F 00 00 00
10 02 FF FF” and then MBTCP can receive response message (” 01 0F 00 00
00 10”). The user can find byte 0, 1 of the input data area in the configuration