5
MTC-04-NT user terminal is shown in figure 1-3
Figure 1-3 MTC-04-NT user terminal diagram
The definition of MTC-04-NT user terminal is shown in table 1-1
Table 1-1 MTC-04-NT terminal definitions
1.3 Light description
The indicator description is shown in Table 1-2
Table 1-2 indicator description
Name
Status
Definition
24V
ON
24V power on
OFF
24V power off
RUN
Flash quickly
（
10Hz
～
15Hz
）
Normal
Flash slowly
（
0.5Hz
～
1Hz
）
There is an error. See
BFM#735 for the error status
Mark
Definition
24V
－
Power supply 24V positive
24V+
Power supply 24V negative
Ground
485
－
RS485 negative terminal
485+
RS485 positive terminal
L1+
～
L4+
Channel 1 to 4 are positive for thermocouple (thermal resistance) signal
input
L1-
～
L4-
Channel 1 to 4 are negative for thermocouple (thermal resistance) signal
input
LR1-
～
LR4-
Channel 1 ~ 4 are negative for thermal resistance signal input
OUT1
～
OUT4
Channel 1 ~ 4 output control terminal
COM0
OUT1
～
OUT4 output common ground
