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6 PROGRAMMING
6.2 Programs Used on Remote I/O Network
6 - 4
System configuration used to describe programs
(1) System configuration
Remote master station (Network No. 1)
(2) Program conditions
This program was written for the CPU on the remote master station to read the
digital values of temperature conversions made on CH.1 to CH.3 of the Q64RD.
Sampling process is performed on CH.1, average process on CH.2 per 500
times, and average process on CH.3 per 1000ms. If a write error occurs, the
corresponding error code appears in BCD.
Disconnection detection is processed on CH.1 only.
(3) Initial settings
• Temperature conversion enabled channel .................................. CH.1 to CH.3
• Sampling channel ......................................................................... CH.1
• Count-specified average process channel .................................. CH.2
• Time-specified average process channel .................................... CH.3
• CH.2 average no. of times ............................................................ 500 times
• CH.3 average time ........................................................................ 1000ms (1s)
(4) Devices used by user
• Initial setting request signal .......................................................... X20
• Temperature measurement value read command signal
(Turned on when user wants to read temperature
measurement value) ..................................................................... X21
• Disconnection detection reset signal ........................................... X22
• Error reset signal
(Turned on when user wants to make error reset) ...................... X23
• Error code display (BCD 3digits) .................................................. Y30 to Y3B
• Conversion completed flag ........................................................... D10
• CH.1 to 3 temperature measurement value (16-bit) .................... D1 to D3
• Disconnection detection flag ........................................................ W4, M20
• Error code storage ........................................................................W5
POINT
Refer to Section 3.3 for the I/O signals (X120 to X12F, Y120 to Y12F).
MELSEC-Q
Remote I/O station (Station No. 1)
X/Y100
X/Y110
X/Y120
to
to
to
X/Y10F
X/Y11F
X/Y12F
(W1 to W3)
6 - 4
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