Communicating With Mitsubishi Plc's; Communicating With E Series And Mac Hmi's - Mitsubishi Electric A2S-MODEM User Handbook Manual

3.3.3 Communicating with Mitsubishi PLC's

Using the A2S/DIN/DESK Modems you will be able to transfer data between a
PC/Laptop and a PLC, seamlessly without making any changes to the default settings
in the HMI or Programming software. The modem can be connected directly to the
PLC via a suitable RS-232 interface or through an HMI port in the "Transparent"
mode, refer to section 2.
A simple test would be that if you are able to programme or monitor the PLC or HMI
when directly connected using the appropriate cable, then the same settings will apply
for the A2S Modems. The intelligence within the modem automatically adjusts
formats, even speeds to suit the individual PLC and HMI configuration. These unique
features, for example, include the ability to recognise when the software is addressing
the HMI and allow "high speed" data transfers.

3.3.4 Communicating with E series and MAC HMI's

There are two methods of communication between the HMI and PC using Modems.
a) Method 1 (preferred):
Using two Mitsubishi A2S/DIN/DESK MODEMs at both ends.
This unique method provides the following features:
• transfer rates of up to 38400 baud.
• uses default software settings
• allows switching between HMI and PLC without having to redial.
NOTE:
1) Prior to installation, each modem must be set to a protocol matching the local
device with the protocol command, for example, AT%ADP=F for FX series and A
for A/Q series via HMI, refer to section 3.1.
2) If "HMI File transfers" (see section 3.3.5) are also required, when the HMI is
connected to an FX series PLC, the RS232 port in the HMI must be changed to
9600,8,N,1. This can be altered via the HMI software in "Set-up/Peripherals" or
via the HMI Front Panel.
Firstly, make connection in the normal way, (see 3.3.1, above), then close the
Terminal application (do not minimise).
Secondly, load the HMI programming software and select the speed "settings" to a
baud rate up to 38400 then, with the "Automatic terminal RUN/PROG" selected,
Transfer your Project in the normal way.
After each successful transfer the modems will automatically return to 9600 baud to
allow normal transparent mode to take place.
b) Method 2:
Dialling from another manufacturers make of modems connected at the PC end.
Firstly, select 2400 baud in the terminal software before making a connection then
close the Terminal application (do not minimise).
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