Delta RMC151 - Manual (Page 564)

RMC70/150 and RMCTools User Manual
Switch Settings
Set the intelligent function module switches for the desired serial settings. See section
4.5.2 of the following Mitsubishi manual: Q Corresponding Serial Communication Module
(User’s Manual).
The data bits must be 8 and the protocol must be Bidirectional. Make sure you set the
baud rate, parity and stop bits identically in the QJ71C24N and RMC75S.
Writing to the RMC75S
Use the GP.BIDOUT instruction to write to registers in the RMC75S. It is described in
section 9.5 of the “Q Corresponding Serial Communication Module User’s Manual (Basic)”.
The RMC75S requires that the data sent to it via this instruction is in the format shown
below.
0
(16 bits
integer)
Register
File
(16 bits
integer)
Register
Element
(16 bits
integer)
Data
Item 1
(32
bits,
typically
floating-
point)
Data
Item 2
(32
bits,
typically
floating-
point)
… Data
Item n
(32
bits,
typically
floating-
point)
Description:
0 This 16-bit word must be 0.
Register
File
This 16-bit word is the file number of the register’s address
in IEC format. For example, for %MD8.12, the file number
is 8.
Register
Element
This 16-bit word is the element number of the register’s
address in IEC format. For example, for %MD8.12, the
element number is 12.
Data Time
1
The RMC70 has 32-bit registers. Therefore, you can only
write 32-bit words. Most RMC70 registers are floating-point;
a few are integers.
Data Item
n
To write n 32-bit registers to the RMC70, make sure the
TxCount is correct. It should be (2 x n) + 3.
Example
A programmer wishes to write 5 values to the variable table (address %MD56.0). These
values are: 32.876, 1.0, 12.0, 5.432, 862.0.
The send data for the GP.BIDOUT instruction would be as follows:
0
(16
bits)
56
(16
bits)
0
(16
bits)
32.876
(32
bits)
1.0
(32
bits)
12.0
(32
bits)
5.432
(32
bits)
862.0
(32
bits)
Reading from the RMC75S
To read registers from the RMC75S, use the GP.BIDOUT instruction to send a read
request and then use the GP.BIDIN instruction to read the received data. The GP.BIDIN
instruction is described in section 9.6 of the “Q Corresponding Serial Communication
Module User’s Manual (Basic)”.
Writing the Read Request
To send a request a read from the RMC75S, the send data of the GP.BIDOUT instruction
must be formatted as shown below. Each box is a 16-bit word.
544 Delta Computer Systems, Inc.