Emerson Fisher D4 Instruction Manual page 30

D4 Valve with Gen 2 easy-Drive Actuator
February 2021
Table 8. Gen 2 easy-Drive Actuator Modbus Map (cont.)
Type Name
uint16 Latch Close State
uint16 RESERVED
uint16 RESERVED
uint16 RESERVED
uint16 RESERVED
uint16 RESERVED
uint16 RESERVED
uint16 RESERVED
uint16 RESERVED
uint16 RESERVED
uint16 RESERVED
uint16 Test Register - 16 bit
uint32 Test Register - 32 bit
uint16 Span calibration
uint16 RESERVED
uint16 RESERVED
uint16 RESERVED
uint16 RESERVED
uint16 RESERVED
uint16 RESERVED
Loss of signal position
uint16
(100=10.0%)
uint16 Modbus timeout (s)
uint16 Dual contact timeout (s)
30
MB Register Default
40029 0
40030
40031
40032
40033
40034
40035
40036
40037
40038
40039
40040 45964
40041, 40042 3,012,341,331
40043 0
40044
40045
40046
40047
40048
40049
40050 0
40051 60
40052 60
-Continued-
R/W Values
R 0 - 1 Normally closed latch state
Fixed register to test correct reading of 16 bit
R 45964
registers - Hex=B38C, Binary=1011001110001100
Fixed register to test correct reading of 32 bit
R 3,012,341,331 registers - Hex=B38C AE53,
Binary=1011001110001100 1010111001010011
Value of 1 will initiate span calibration. Will
R/W 0,1
automatically set back to 0.
Position to which valve plug will be driven upon loss
of signal. Loss of signal is based upon the active
control mode. 0-1000=0-100.0% with 1 implied
R/W 0-1001 decimal point. In on/off mode 0-499 will result in
movement to 0% while 500-1000 will result in
movement to 100%. A value of 1001 in any control
mode is the setting for "lock-in-last".
Time without a valid Modbus message is seen (to any
address) before "loss of signal" motion is engaged
R/W 0-65535
when in Modbus control mode. Only active in
Modbus control mode. 0=disabled
Time without a digital signal being low (contact
made) from either digital input as viewed by voltage
level on the digital input terminals. If neither contact
R/W 0-3600 has been made (pulled input low) within the timeout
period, the valve plug will be moved to the
loss-of-signal position. Only active in the local, on-off,
dual contact mode. 0=disabled.
Instruction Manual
D104188X012
Notes