Badger Meter SRD/SRI Valve Positioners - Manual (Page 84)

STATUS BITS
Primary Status Bits
The Primary Status Byte is returned in every response message generated by the positioner . The individual bits of the status
byte are defined below and are derived from the reference ED3699 rev C . When the specified condition exists, the status bit
will be set to One otherwise, the status bit will be Zero .
7 6 5 4 3 2 1 0
Analog
Operate
SSTAT Error Diag Health — Device Busy Mode —
• Bit 7 – Set to 1 if the positioner is running in analog, zero if running digital mode
• Bit 6 – Set to 1 if the Secondary Status Byte is non-zero, it requests FBM action
• Bit 5 – Set to 1 if a Current Diagnostic Error exists
• Bits 4,3 – Setpoint health:
◊ 00 = OK, operation of positioner normal
◊ 01 = warning condition, alarm is set but positioner still functional
◊ 10 = error condition, positioner is non-functional (supersedes all warnings)
◊ 11 = not used
• Bit 2 – Set to 1 only if the positioner is busy writing its EEPROM, or if the positioner is in the incorrect mode for what is
requested . That is, the current command is valid but not currently executable (for instance, while calibrating) .
• Bits 1,0 – Mode:
◊ 00 = ON-LINE mode, (normal)
◊ 01 = LOCAL mode, (normal, only HHT/PC10 are allowed to write setpoint)
◊ 10 = CALIBRATE mode, (auto start)
◊ 11 = OFFLINE mode, (FAULT, off-line)
Secondary Status Bits
When the specified error condition exists, the status bit will be set to One . Otherwise, the status bit will be Zero . The
secondary status is meant to be non-sticky . That is, the error condition is reflected here but only as long as it is true . Clearing
the error condition is a matter of correcting the underlying fault .
7 6 5 4 3 2 1 0
Control Diff LoLo Alarm HiHi Alarm Low Alarm High Alarm NOT USED More Status
Failsafe
Timeout
• Bit 7 – Control difference out of limit alarm . This means that the positioner exceeded the allowable control difference for
the allowed duration . Control is either sluggish or un-optimized .
• Bit 6 – Travel Position low low alarm . The valve position is below the minimum allowed .
• Bit 5 – Travel Position high high alarm . The valve position is above the maximum allowed .
• Bit 4 – Travel Position low alarm . The valve position has gone below the user specified point .
• Bit 3 – Travel Position high alarm . The valve position has gone above the user specified point .
• Bit 1 – More Status is available by reading the additional status bytes
Status Bits
Page 84 August 2014 POS-UM-00011-EN-02