Delta DTM Series - Cold Junction Compensation Selection

Chapter 3: Input Function Configuration
DTM temperature controller operating manual
3-6
3.3.3 Cold Junction Compensation Selection
When using a thermocouple sensor, the factory default setting is internal cold contact compensation. The
following provides the settings of cold contact compensation as external compensation in special
applications.
Correspondence between communication address and content is shown in the following table.
Name
Address
CH1
CH2
CH3
CH4
CH5
CH6
CH7
CH8
Cold junction
compensation
select
Hx260
Host:
H0000
:CH1 ~ CH8 are all used internal cold junction compensation (factory
default).
H00
X1: the CH1 of internal station number X is the external cold junction
temperature, and the remaining channels are all used the temperature value of
CH1
of internal station number X as the external cold junction compensation.
H00
X2: the CH2 of internal station number X is the external cold junction
temperature, and the remaining channels are all used the temperature value of
CH2 of internal station number X as the external cold junction compensation.
H00
X3: the CH3 of internal station number X is the external cold junction
temperature, and the re
maining channels are all used the temperature value of
CH1 of internal station number X as the external cold junction compensation.
.
H00
X4 = the CH4 of internal station number X is the external cold junction
temperature, and the remaining channels are all
used the temperature value of
CH4 of internal station number X as the external cold junction compensation.
.
H00
X5 = the CH5 of internal station number X is the external cold junction
temperature, and the remaining channels are all used the temperature valu
e of
CH5 of internal station number X as the external cold junction compensation.
H00
X6 = the CH6 of internal station number X is the external cold junction
temperature, and the remaining channels are all used the temperature value of
CH6 of internal stati
on number X as the external cold junction compensation.
H00
X7 = the CH7 of internal station number X is the external cold junction
temperature, and the remaining channels are all used the temperature value of
CH7 of internal station number X as the externa
l cold junction compensation.
H00
X8 = the CH8 of internal station number X is the external cold junction
temperature, and the remaining channels are all used the temperature value of
CH8 of internal station number X as the external cold junction compensati
on.
Measurement Expansion module:
H0000
: CH1 ~ CH8 are all used internal cold junction compensation.
(factory default)
H0009
: CH1 ~ CH8 are all compensated by the external cold junction
temperature transmitted from the DTM host.
H0001
: CH1 is the external cold junction temperature, and the remaining
channels are all used the temperature value of CH1 as the external cold
junction compensation.
H0002
: CH2 is the external cold junction temperature, and the remaining
channels are all used the temperature value
of CH2 as the external cold
junction compensation.
H0003
: CH3 is the external cold junction temperature, and the remaining
channels are all used the value of CH3 as the external cold junction
compensation.
H0004
: CH4 is the external cold junction temperature, and the remaining
channels are all used the temperature value of CH4 as the external cold
junction compensation.
H0005
: CH5 is the external cold junction temperature, and the remaining
channels are all used the temperature of CH5 as the external cold
junction
compensation.
H0006
: CH6 is the external cold junction temperature, and the remaining
channels are all used the temperature value of CH6 as the external cold