Delta RMC151 - Manual (Page 563)

6 Communication
Full-duplex DF1 is used for peer-to-peer communication. Therefore, only two devices can
communicate with one another. The RMC70 only supports full-duplex when used with RS-
232.
Half-duplex DF1 is used for master-slave communication with one or more slaves. When
more than two devices communicate with one another, 2-wire RS-485 is used. Otherwise,
any line driver can be used.
RMC70 Support for DF1
Both full- and half-duplex DF1 use the same application protocol, which consists of
commands and functions for the slave or peer to execute.
The RMC70 supports the following DF1 functions:
• SLC Protected Typed Write with 2 Address Fields (CMD=0x0F, FNC=0xA9)
• SLC Protected Typed Read with 2 Address Fields (CMD=0x0F, FNC=0xA1)
• SLC Protected Typed Write with 3 Address Fields (CMD=0x0F, FNC=0xAA)
• SLC Protected Typed Read with 3 Address Fields (CMD=0x0F, FNC=0xA2)
• Echo (CMD=0x06, FNC=0x00)
• Diagnostic Status (CMD=0x06, FNC=0x03)
• PLC-5 Word Range Read (CMD=0x0F, FNC=0x 68)
• PLC-5 Word Range Write (CMD=0x0F, FNC=0x 67)
• PLC-5 Typed Read (CMD=0x0F, FNC=0x 01)
• PLC-5 Typed Write (CMD=0x0F, FNC=0x 00)
PLC Support for DF1
DF1 is a major industrial serial protocol supported by a large number of devices, both
those built by Allen-Bradley and other companies. Any DF1 master implementation that
uses the above blocks should also be able to read and write from the RMC70.
Using DF1 with Allen-Bradley PLCs
See the Using Allen-Bradley Controllers via Message Block for details on communicating
with Allen-Bradley PLCs.
6.10.4.2. Mitsubishi Bidirectional Protocol
The Mitsubishi Bidirectional protocol is one of the serial RS-232 and RS-485 protocols
supported by the RMC75S. The Mitsubishi Bidirectional protocol is for use with Mitsubishi's Q-
series QJ71C24N serial communication module. This protocol requires RMC70 firmware version
1.60 or newer and RMCTools version 1.60.0 or newer.
The QJ71C24N supports several communication protocols. The one that matches the needs of
the RMC75S is the Bidirectional protocol. It allows the Q-series PLC to read and write binary
data from an RMC75S over serial RS-232 or RS-485. The RMC75S requires that the data sent
via the Bidirectional protocol be formatted as described in this topic.
The Bidirectional protocol is described in Mitsubishi’s “Q Corresponding Serial Communication
Module User’s Manual (Basic)”. The manual part number is SH (NA)-080006-J. Search for
080006 on www.meau.com in the Downloads>>Manuals section.
A sample program for using the Bidirectional protocol is available on the downloads page of
Delta's website at http://www.deltamotion.com/dloads. This should be used as a starting point
for any Mitsubishi Q-series program using the QJ71C24N module and an RMC75S.
Configuring
The instructions below are with GX Developer version 8.25B.
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