Omron SYSDRIVE 3G3JV User Manual page 166

Communications
put) of the Inverter, and monitors the Inverter status.
Three Inverters with Slave addresses from 01 to 03 are installed for communications.
D Checking the Register Numbers
• In the above example, the following three registers are required.
Control Input:
Frequency Reference:
Control Output:
D Memory Allocations
• The PMCR instruction sends each Slave the data in consecutive words specified by the operand and
beginning with the first word (S), and writes in the memory area beginning with the first word (D) the
data received.
• The following memory allocations are made in the above example.
SYSMAC CS/CJ-series Programmable Controllers
C1
Register 0001 Hex for RUN command
Register 0002 Hex
Register 002C Hex for Inverter status
Control data
Communications
port
0 to 7 Hex
Sequence No.
0000 to 03E7 Hex (000 to 999)
No. of data items sent in accordance with PMCR
instruction (000B)
No. of Slaves (0003)
First Slave address (0001)
RUN command to Slave 1
Frequency reference to Slave 1
Second Slave address (0002)
RUN command to Slave 2
Frequency reference to Slave 2
Third Slave address (0003)
RUN command to Slave 3
Frequency reference to Slave 3
No. of data items received in accordance with
PMCR instruction (0003)
Slave 1 Inverter status
Slave 2 Inverter status
Slave 3 Inverter status
Serial port Communications Board/Unit
Port 1: 1 Hex unit number specification
Port 2: 2 Hex
Inner board: E1 Hex
CPU Bus Unit: Unit number
+ 10 Hex
Data
Chapter 7
Communications
Board/Unit 3G3JV
7-41