Connection To A Temperature Controller; System Configuration - YASKAWA MP920 User Manual

8.4

Connection to a Temperature Controller

This section explains no-protocol communications with a Temperature Controller.
8.4.1

System Configuration

Temperature data is read by connecting a Temperature Controller (SR-Mini) manufactured
by RKC INSTRUMENT INC. to the RS-232C (Port 2) of the 217IF Module.
The engineering environment is provided by connecting the MPE720 Programming Device
to the 217IF (CN1).
SR-Mini
Tempe-
rature
Controller
No-protocol Communications Between the MP920 217IF and a
Temperature Controller Manufactured by RKC INSTRUMENT INC.
With this protocol, the SR-Mini temperature input values from CH0 to CH3 are stored in
MW07030 and later registers.
MW07000
MW07030
PS-01
General-purpose
messages
RS-232C
MP920
Address, STX
Parameter
Control code
Number of read data items
LF, CR
Address, STX
Parameter
CH0 temperature input measurement values
As above
CH1 temperature input measurement values
As above
CH2 temperature input measurement values
As above
CH3 temperature input measurement values
As above
LF, CR
Fig. 8.1 Data Flow when a Sample Program is Used
8-23

8.4 Connection to a Temperature Controller

MP920
CPU-01 217IF
Engineering
SR Mini
CH0
Temperature input measurement values
Temperature input measurement values
CH1
CH2 Temperature input measurement values
CH3 Temperature input measurement values
MPE720
8