Flowserve MX-100 Field Unit - Manual (Page 56)

MX/DDC-100 Field Unit Installation and Maintenance FCD LMENIM2329-01 – 03/11
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Appendix – MX/DDC Register Definitions
Register 1
Command register. Write-only. 16-bit unsigned value. Control register for input of predetermined actuator control
values. Typical values equate to Open, Stop, Close, “Move-To” Enable, etc.
Register 2
Argument register. Write-only. 16-bit unsigned value. Control register for input of variable data used for predefined
actuator control scenarios. Typical usage is for input of desired valve position when used with the “move-to”
command.
Register 3
Analog Out 1. Read-only. 16-bit unsigned value. This option may be configured for APT or ATT and MUST be present
and enabled for a value to be displayed in this register. Reports the a 4-20 mA / 0-20 mA / 0-10 VDC / 2-10 VDC / 1-5
VDC / 0-5 VDC output signal value as configured in 0-100 increments of span. May be adjusted to different scaling of
0-255 or 0-4095. The analog output signal is referenced at terminal points 18 and 17 (common).
Scaling chosen through local control station (LCS) “CHANGE DDC?” subroutine “ANALOG SCALE 0-100-OK?”
provides information for diagnostic purposes, and will alter values displayed in registers 3, 4, 6, 7, 8.
Register 4
Analog Out 2 value. Read-only. 16-bit unsigned value. This option may be configured for APT or ATT and MUST be
present and enabled for a value to be displayed in this register. Reports a 4-20 mA / 0-20 mA / 0-10 VDC / 2-10 VDC
/ 1-5 VDC / 0-5 VDC output signal value as configured in 0-100 increments of span. May be adjusted to different
scalings of 0-255 or 0-4095. The analog output signal is referenced at terminal points 16 and 1 (common).
Scaling chosen through local control station (LCS) “CHANGE DDC?” subroutine “ANALOG SCALE 0-100-OK?”
provides information for diagnostic purposes, and will alter values displayed in registers 3, 4, 6, 7, 8.
Register 5
Indicates measured voltage of three-phase power. 16-bit unsigned value. Provides information for diagnostic
purposes.
Register 6
Analog Input 1. Read-only. 16-bit unsigned value. May be configured to record a 4-20 mA or 0-20 mA signal. Default
scale is 0-100 increments of span. May be adjusted to different scaling of 0-255 or 0-4095. Referenced as terminals
12 and 17 (common).
Scaling chosen through LCS “CHANGE DDC?” subroutine “ANALOG SCALE 0-100-OK?” provides information for
diagnostic purposes, and will alter values displayed in registers 3, 4, 6, 7, 8.
Register 7
Analog Input 2. Read-only. 16-bit unsigned value. May be configured to record a 4-20 mA or 0-20 mA signal. Default
scale is 0-100 increments of span. May be adjusted to different scaling of 0-255 or 0-4095. Referenced as terminals 2
and 1 (common).
B