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Appendix C
E5jK Digital Controller Read Protocol
155
terminator to units No.0 to No.29. Use a resistance of 120Ω (1/2W) for the terminators (the total resis-
tance of both ends must be 54Ω or more).
Terminator (120 W, 1/2 W)
A<B: [1] Mark
A>B: [0] Space
Serial Communications Board
Pin No.
Shielded cable
E5CK (No. 30)
Terminal No. Terminal No.
E5CK (No. 0)
RS-485: D-sub
9 pin female
RS-485: Terminal block RS-485: Terminal block
Read Process Value (Sequence No. 000)
Reads the process value and stores the results in the specified words.
Send Data Word Allocation (2nd Operand of PMCR)
First word of
send data
Number of send data words+0
+1
(Undefined)
Unit No.
Offset Contents (data format) Data
+0 Number of send data words
(4 digits BCD)
0002 (fixed)
+1 Unit No. (2 digits BCD) 00 to 31
Receive Data Word Allocation (3rd Operand of PMCR)
Receive data
storage words
Number of receive data words+0
+1
Process value
Offset Contents (data format) Data
+0 Number of receive data words
(4 digits BCD)
0002
+1 Process value (4 digits BCD) Scaling lower limit to upper limit
Read Set Point during SP Ramp (Sequence No. 001)
Reads the set point during the SP ramp and stores the results in the specified words.
Send Data Word Allocation (2nd Operand of PMCR)
First word of send
data
Number of send data words+0
+1
(Undefined)
Unit No.
Offset Contents (data format) Data
+0 Number of send data words
(4 digits BCD)
0002 (fixed)
+1 Unit No. (2 digits BCD) 00 to 31
Receive Data Word Allocation (3rd Operand of PMCR)
Receive data
storage words
Number of receive data words+0
+1
Set point during SP ramp