3 — PROGRAMMABLE PARAMETERS
pg. 47
Return to TOC Curtis Model 1351 – December 2018
RTD Input
e 1351’s RTD 10k resistance range will accommodate the many resistive sensing devices. e
1351 System Controller’s 4-point parameter mapping of RTD inputs oers customized resistive values
to specify a “value” (voltage) output for a given resistance, thus enabling a wide range of RTD usage
for temperature, pressure, linear-motion, and similar applications. Four RTDs can be connected and
each used in VCL (see Figure 4).
INPUTS — RTD INPUT
PARAMETER ALLOWABLE RANGE DEFAULT DESCRIPTION
RTD 1 – 4: X = the RTD Input number which is part of the VCL parameters’ name
Resistance
RTD_X_R
Variable’s CAN Index by RTD Input:
1 = 0x3310 0x00
2 = 0x3311 0x00
3 = 0x3312 0x00
4 = 0x3313 0x00
0 – 10000 Ohms
0 – 10000
Read Only The RTD’s resistance at the corresponding voltage point.
Refer to the RTD X Map. This variable is also in the Monitor menu:
Monitor/Inputs/RTD Input/RTDX/Resistance
X = 1, 2, 3, or 4 for the Resistance: RTD_X_R
Value
RTD_X_OUT
Variable’s CAN Index by RTD Input:
1 = 0x3314 0x00
2 = 0x3315 0x00
3 = 0x3316 0x00
4 = 0x3317 0x00
−32768 – 32767
−32768 – 32767
Read Only The “value” (voltage) at the RTD input corresponding to the RTD
resistance point. The meaning of the output value depends on the
type of RTD used: Pressure, Temperature, Etc.
Refer to the RTD X Map. This variable is also in the Monitor menu:
Monitor/Inputs/RTD Input/RTDX/Resistance
X = 1, 2, 3, or 4 for the Value: RTD_X_OUT
RTD Enable
RTD_X_Enable
Parameter’s CAN Index by RTD
Input:
1 = 0x3050 0x00
2 = 0x3051 0x00
3 = 0x3052 0x00
4 = 0x3053 0x00
Float / Pull Up
0 – 1
Float
0
Pull Up = RTD Enabled at pin (RDT X)
0 = Float
1 = Pull Up
X = 1, 2, 3, or 4 for the Value: RTD_X_Enable
RTD 1 – 4 Map: X = the RTD Map number which is part of the VCL parameters’ name
RTD Resistance: X = the RTD Resistance number which is part of the VCL parameters’ name
Point 1
RTD_X_R1
Parameter’s CAN Index by RTD
Input:
1 = 0x3060 0x00
2 = 0x3080 0x00
3 = 0x30A0 0x00
4 = 0x30C0 0x00
0 – 10000 Ohms
0 – 10000
0 The resistance of the RTD at the corresponding voltage point.
Inputs below this Point 1 are limited to “Out 1” (below).
These resistive values MUST be in ascending/increasing order.
This parameter is the least (lowest) resistance of the 4
parameters.
X = 1, 2, 3, or 4 for the Value: RTD_X_R1
Point 2
RTD_X_R2
Parameter’s CAN Index by RTD
Input:
1 = 0x3061 0x00
2 = 0x3081 0x00
3 = 0x30A1 0x00
4 = 0x30C1 0x00
0 – 10000 Ohms
0 – 10000
0 The resistance of the RTD at the corresponding voltage point.
This R-values map MUST be in ascending/increasing order.
This parameter is the next lowest resistance of the 4.
X = 1, 2, 3, or 4 for the Value: RTD_X_R2
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