221
Appendix C
E5
#
K Digital Controller Read Protocol
The E5
#
K Digital Controller Read Protocol reads and controls various parameters in remote mode for the
Controller connected to the Serial Communications Unit/Board via RS-232C or RS-485 cable.
Structure of the Protocol
The following table shows the structure of the E5
#
K Digital Controller Read Protocol.
Note 1.
The hexadecimal equivalents of sequences numbers are given in parentheses.
2.
Ladder Interface Settings
YES: User settings are required for the 3rd or 4th operands of PMCR.
NO:
Send word allocation:
Set the constant 0000 for the 3rd operand (S).
Receive word allocation:
Set the constant 0000 for the 4th operand (D).
Sequence
No.
Communications sequence
name
Function
Ladder interface
Send word
allocation
Receive word
allocation
000 (0000)
Read process value
Reads the process value.
Yes
Yes
001 (0001)
Read set point during SP ramp
Reads the set point during SP
ramp.
Yes
Yes
002 (0002)
Read MV
Reads the MV (heating, cooling).
Yes
Yes
003 (0003)
Read set point
Reads the set point.
Yes
Yes
004 (0004)
Read alarm value
Reads alarm value 1, 2.
Yes
Yes
005 (0005)
Read proportional band, integral
time, and derivative time
Reads the proportional band, inte-
gral (reset) time, and derivative
(rate) time
Yes
Yes
006 (0006)
Read cooling coefficient
Reads the cooling coefficient.
Yes
Yes
007 (0007)
Read dead band
Reads the dead band.
Yes
Yes
008 (0008)
Read manual reset value
Reads the manual reset value.
Yes
Yes
009 (0009)
Read hysteresis
Reads the hysteresis (heating,
cooling).
Yes
Yes
010 (000A)
Read control period
Reads the control period (heating,
cooling).
Yes
Yes
011 (000B)
Read SP ramp time unit and set
value
Reads the SP ramp time unit and
SP ramp set value.
Yes
Yes
012 (000C)
Read LBA detection time
Reads the LBA detection time.
Yes
Yes
013 (000D)
Read MV at stop and PV error
Reads the MV at stop and the MV
at PV error.
Yes
Yes
014 (000E)
Read MV limits
Reads the MV limits.
Yes
Yes
015 (000F)
Read input digital filter
Reads the input digital filter.
Yes
Yes
016 (0010)
Read alarm hysteresis
Reads the alarm 1, 2 hysteresis.
Yes
Yes
017 (0011)
Read input shifts
Reads the input shift limits.
Yes
Yes
018 (0012)
Read level 0 parameters
Reads parameters in level 0.
Yes
Yes
019 (0013)
Read level 1 parameters 1
Reads parameters in level 1.
Yes
Yes
020 (0014)
Read level 1 parameters 2
Reads parameters in level 1.
Yes
Yes
021 (0015)
Read level 2 parameters 1
Reads parameters in level 2.
Yes
Yes
022 (0016)
Read level 2 parameters 2
Reads parameters in level 2.
Yes
Yes
023 (0017)
General-purpose read
Reads the value of the specified
parameter.
Yes
Yes
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