T P 7 0 P Q u i c k St a r t
Step 2:
Create a numeric display in the working area. Select the
External PLC Setting
option button, and set a
PLC address in the
Refer Device
window. (In the example, the PLC address set is 1.) Type a standard Modbus
communication address in the
Device Number
box.
Step 3:
In the
Basic Configuration
window, click
TP <=> PLC Protocol
, and then set a communication format
for COM3. (In the example, the communication format set is (9600, 7, E, 1).)
Step 4:
Compile the program created, and download the program to TP70P. Connect COM3 on TP70P to an
RS-485 communication port on a PLC.
3.7
Using COM3 as a Slave Station
【
Question
】
How does a device read data in TP70P through COM3 on TP70P?
【
Answer
】
COM3 supports Modbus slave ASCII/RTU modes. The example below describes how a device read
data in TP70P through COM3 on TP70P.
3 - 1 0
