Siemens Milltronics BW500 Operating Lnstructions page 110

I/O (R41,070 – 41,116)
The BW500 provides I/O in the form of:
• discrete inputs
• relay outputs
1)
• mA inputs
• mA outputs
For the I/O, the assigned registers represent the logic status (e.g. open or closed) of the
I/O as configured. Discrete inputs are configured via P270, auxiliary input function; while
relay outputs are configured via P100, relay function.
The I/O are mapped into the respective input and output registers, R41,070 and R41,080, as
follows:
R41,070
Input
1
2
3
4
5
For the mA I/O, the assigned registers represent the mA level (e.g. 0 to 20 mA) of the I/O
as registered in P911 and P914, mA output test (output value) and mA input value.
The mA I/O are mapped into the respective input and output registers:
Input
1
2
For 0 to 20 mA I/O, the register value ranges from 0 to 20,000. For 4 to 20 mA I/O, the
register value ranges from 4,000 to 20,000. If the 4 or 20 mA values have been trimmed,
then the register value is adjusted accordingly; e.g. an I/O value of 22 mA would be
registered as 22,000.
Diagnostic (R41,200)
Troubleshooting
Refer to
1)
The standard BW500 provides only one mA output (0/4 – 20 mA). The inclusion of
an optional mA I/O card provides two mA inputs (0/4 – 20 mA) and two additional
mA outputs. The optional mA I/O card is not available with BW500/L
Page 104 Milltronics BW500 and BW500/L - OPERATING INSTRUCTIONS 7ML19985DK05
1)
Bit
1
2
3
4
5
Register
R41,090
R41,091
on page 148.
R41,080
Output
1
2
3
4
5
Output Register
1 R41,110
2
3
Bit
1
2
3
4
5
R41, 1 11
R41, 1 12