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Reference Manual
00809-0100-4026, Rev HA
Appendix I: Analog-Input block
November 2014
Analog-Input Block
I.4 Block errors
Table 2 lists conditions reported in the BLOCK_ERR parameter.
Table I-2. BLOCK_ERR Conditions
I.5 Modes
The AI Function Block supports three modes of operation as defined by the MODE_BLK
parameter:
Manual (Man) The block output (OUT) may be set manually
Automatic (Auto) OUT reflects the analog input measurement or the simulated value
when simulation is enabled.
Out of Service (O/S) The block is not processed. FIELD_VAL and PV are not updated and
the OUT status is set to Bad: Out of Service. The BLOCK_ERR parameter shows Out of
Service. In this mode, you can make changes to all configurable parameters. The target
mode of a block may be restricted to one or more of the supported modes.
Condition
number
Condition name and description
0Other
1
Block configuration error: the selected channel carries a measurement that is
incompatible with the engineering units selected in XD_SCALE, the L_TYPE parameter is
not configured, or CHANNEL = zero.
2 Link configuration error
3
Simulate active: Simulation is enabled and the block is using a simulated value in its
execution.
4Local override
5 Device fault state set
6 Device needs maintenance soon
7
Input failure/process variable has bad status: The hardware is bad, or a bad status is
being simulated.
8 Output failure: The output is bad based primarily upon a bad input.
9 Memory failure
10 Lost static data
11 Lost NV data
12 Readback check failed
13 Device needs maintenance now
14 Power up
15 Out of service: The actual mode is out of service.
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