Rockwell Automation 8520 9/Series CNC Integration Maintenance Manual Documentation Set - Manual (Page 859)

Error and System Messages
Section 16
16-39
Message Description
SEQUENCE STOP NUMBER FOUND A sequence stop number has been activated, and that sequence number has been found in the
currently executing program. Execution will stop after the block containing the sequence
number corresponding to the sequence stop number is executed. Execution will resume when
cycle start is pressed.
SERIAL COMMUNICATIONS BUFFER OVERFLOW A peripheral device communication error (such as a tape reader). The 512 character input
(receive) buffer has overflowed. Data may have been lost. Check your configured
communications protocol (flow control) and check for proper cabling/pin connections.
SERIAL COMMUNICATIONS ERROR #1 This is an internal software error. The control is unable to access DF1 Driver.
SERIAL COMMUNICATIONS ERROR #2 This is an internal software error. Check cables and try again.
SERIAL COMMUNICATIONS ERROR #3 This is an internal software error. This is an unknown DF1 Driver error.
SERIAL COMMUNICATIONS ERROR #4 This is an internal software error. The control is unable to access the serial communications
port.; check cables and try again.
SERIAL COMMUNICATIONS ERROR #5 Serial communications port has not received the expected response in the time allowed.
SERIAL COMMUNICATIONS FRAMING ERROR An incorrect number of bits was encountered during a read operation. Check your device setup.
SERIAL COMMUNICATIONS PARITY ERROR Incorrect parity of data was received. Check your device setup.
SERIAL PORT IN USE This message will appear if a serial communications port is busy when checked prior to
transmission.
SERIAL UART BUFFER OVERFLOW The 2 character buffer on the UART receiver has overflowed. A character has been lost. Check
communications setup.
SERVO AMP C LOOP GAIN ERROR One of the following AMP parameter errors exist::
Current Prop. Gain + Current Integral Gain < 4096
or
Current Prop. Gain - Current Integral Gain > 0.
SERVO AMP ERROR There is an error in one or more of the AMP parameters relative to servo control or an absolute
feedback encoder failed to initialize.
SERVO AMP FDBK PORT ERROR The feedback port assignments in AMP are wrong; for example, two servos are using the same
feedback port on the same servo module.
SERVO AMP FE LIMITS CORRECT One or more of the following AMP parameters were changed to satisfy the following equation:
Inposition Band £Gain Break Point £Feedrate Suppression £Excess Error
The servo module would have disabled control operation if these parameters were not changed.
SERVO AMP ID SPEED CORRECT One or more of the following AMP parameters were changed to satisfy the following equation:
o/ < Motor speed at starting Id < Motor speed at Id Break Point < Max. Motor Speed
The servo module would have disabled control operation if these parameters were not changed.
SERVO AMP OUTPUT PORT ERROR The output ports as assigned in AMP are wrong; for example, two servos on the same board are
assigned to the same output port.
SERVO AMP V LOOP GAIN ERROR One of the following AMP parameter errors exist:
Velocity Prop. Gain + Velocity Integral Gain < 65536
or
Velocity Prop. Gain -- Velocity Integral Gain > 0
SERVO AMP, AMP TYPE ERROR The AMP parameters specifying amplifier types and connectors are contradictory.
SERVO AMPLIFIER FAULT This indicates that a fault signal has been received from a servo amplifier. It can usually be
corrected by turning off power to the amplifier, and then back on.