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Appendix C
E5jK Digital Controller Read Protocol
156
Offset Contents (data format) Data
+0 Number of receive data words
(4 digits BCD)
0002
+1 Set point during SP ramp
(4 digits BCD)
Set point lower limit to upper limit
Read MV (Sequence No. 002)
Reads the MV (manipulated variable) for heating and cooling 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
+2
MV (heating)
MV (cooling)
Offset Contents (data format) Data
+0 Number of receive data words
(4 digits BCD)
0003
+1 MV (heating) (4 digits BCD) F050 to 1050, 0000 to 1050 for
heating/cooling control
F indicates a negative value.
+2 MV (cooling) (4 digits BCD) F050 to 1050
F indicates a negative value.
Read Set Point (Sequence No. 003)
Reads the set point and stores the results in the specified word.
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
Offset Contents (data format) Data
+0 Number of receive data words
(4 digits BCD)
0002
+1 Set point (4 digits BCD) Set point lower limit to upper limit
Read Alarm Value (Sequence No. 004)
Reads alarm value 1 and alarm value 2 and stores the results in the specified words.