Siemens milltronics BW500 Instruction Manual page 101

I/O (R41,070 – 41,116)
The BW500 provides I/O in the form of:
• discrete inputs
• relay outputs
• mA inputs*
• mA outputs*
* 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.
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
7ML19985DK03 Milltronics BW500 – INSTRUCTION MANUAL
Bit Output
1
2
3
4
5
Register Output
R41,090
R41,091
on page 133.
R41,080
Bit
1 1
2 2
3 3
4 4
5 5
Register
1 R41,110
2 R41, 1 11
3 R41, 1 12
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