Emerson Rosemount OCX 8800, Instruction Manual

Page: 164 / 306

Section 7: Foundation
Fieldbus
April 2017
Instruction Manual
IM-106-880C, OI
13
8
Block
Errors
7.12.5 Block Errors
Table 7-28 lists conditions reported in the BLOCK_ERR parameter. Conditions in italics
are inactive for the PID block and are given here only for your reference.
Table 7-28 BLOCK _ERR Conditions
Condition
Number
Condition Name and Description
0 Other
1 Block Configuration Error: The BY_PASS parameter is not configured and is set to 0, the SP_HI_LIM
is less than the SP_LO_LIM, or the OUT_HI_LIM is less than the OUT_LO_LIM.
2 Link Configuration Error
3 Simulate Active
4 Local Override: The actual mode is LO.
5 Device Fault State Set
6 Device Needs Maintenance Soon
7 Input Failure/Process Variable has Bad Status: The parameter linked to IN is indicating a Bad status.
8 Output Failure
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.
7.12.6 Modes
The PID function block supports the following modes:
• Manual (Man)—The block output (OUT) may be set manually.
• Automatic (Auto)—The SP may be set manually and the block algorithm calculates OUT.
• Cascade (Cas)—The SP is calculated in another block and is provided to the PID block
through the CAS_IN connection.
• RemoteCascade (RCas)—The SP is provided by a host computer that writes to the
RCAS_IN parameter.
• RemoteOutput (Rout)—The OUT is provided by a host computer that writes to the
ROUT_IN parameter.
• Local Override (LO)—The track function is active. OUT is set by TRK_VAL. The
BLOCK_ERR parameter shows Local override.
• Initialization Manual (IMan)—The output path is not complete (for example, the
cascade-to-slave path might not be open). In IMan mode, OUT tracks BKCAL_IN.
• Out of Service (O/S)—The block is not processed. The OUT status is set to Bad: Out of
Service. The BLOCK_ERR parameter shows Out of service.
You can configure the Man, Auto, Cas, and O/S modes as permitted modes for operator entry.