Weidmuller WI-I/O-EX: Wireless I/O Expansion Modules v1.11 User Manual
Page 30
WI-I/O-EX Serial I/O Module
User Manual v1.11
Page 30
February 2010
Clicking Read from WI-I/O-EX will read the scales out of the unit (if any) and display
them in the scales grid. Note that the dip switches should be set correctly for this result to
be relevant.
Choose the desired scale for each channel in the Scale box. Click the Save scales to WI-
I/O-EX button, and check that the scales are updated in the WI-I/O-EX Detected panel.
4.4.2 Current input
Current inputs may be selected in the scales 0 to 10mA, 0 to 20mA, or 4 to 20mA. For
each scale, the minimum to maximum signal levels are represented by 4000 hex to C000
hex. Table 4-2 shows how the WI-I/O-EX-12 current readings translate to outputs in
other wireless products.
WI-I/O-EX-
12 Current
scale
WI-I/O-EX-
12
Input current
(mA)
WI-GTWY
Register value
(hex)
WI-I/O 9-1
Output current
(mA)
WI-I/O 9-3
Output current
(mA)
0
4000
4
4
0 to 10mA
10
C000
20
20
0
4000
4
4
0 to 20mA
20
C000
20
20
0
2000
0.5
*
0
4
4000
4
4
4 to 20mA
20
C000
20
20
Table 4-2: Compatibility of WI-I/O-EX-12 current inputs with other products.
*
Reduced accuracy for less than 4mA in WI-I/O 9-1.