Pixsys EPL101, User Manual

Page: 49 / 84

49
1.2.1 Example of connection to RS485
Below an example of connection for several modules EPL101 to RS485 for
communication with a master device.
1.3 Configuration of analog inputs
Analog inputs of EPL101 must be properly set both at software level
(selecting choosen value on special-markers SM40..43) and by correct
setting of internal jumpers. Check the following table to get the options
allowed for each input.
Selection of inputs
AI1 AI2 AI3 AI4
1
0
Desabled
○ ○ ○ ○
○ = selection allowed
× = selection not
allowed 1
0..1 V
○ ○ ○ ○
2
0..20 mV
○ ○ ○ ○
3
0..20 mA
○
× × ×
4
4..20 mA
○
× × ×
5
TC K
○ ○ ○
×
6
TC S
○ ○ ○
×
7
TC T
○ ○ ○
×
8
TC R
○ ○ ○
×
9
TC J
○ ○ ○
×
10
TC E
○ ○ ○
×
11
TC B
2
○ ○ ○
×
12
PT100
○ ○
3
○
4
○
13
NI100
○ ○
5
○
6
○
14
Compens.
PT/NI
×
○ ○
×
15
NTC-10K
○ ○ ○ ○
According to the table, the EPL101can read following inputs:
•
Up to 3 thermocouples (K, S, T, R, J, E, B)
1
Input AI4 cannot be used if thermocouples are connected to one of the channels
AI1, AI2 or AI4 because it is internally connected to cold junction.
2
Thermocouple B available starting with firmware 2.00
3
Only for PT100 2wires
4
Only for PT100 2wires
5
Only for NI100 2wires
6
Only for NI100 2wires