Drive-Cliq Interface; Interface Parameters; Status Information - Balluff DRIVE-CLiQ Notice D'utilisation

BML SGA-AEZ1-LZZZ- _ _ _1- _ _ _ _
Absolute magnetic encoder system
6

DRIVE-CLiQ interface

6.1

Interface parameters

An introduction to the DRIVE-CLiQ interface
can be found in the document Interfaces for
Magnetic Encoder System BML.
Description
Minimum cycle time
Readiness delay
Position data resolution
1)
Coarse resolution
1)
1) The sensor head resolution is 1 µm/increment.
Tab. 6-1: Interface parameters
6.2

Status information

The sensor head can generate various alarms:
– Internal system error
– Position error: F3x137
– Temperature error (if applicable): F3x405
For alarm type F3x137 the internal error code contains
detailed information and consists of two parts:
Internal error code
Error bytes
Tab. 6-2: Internal error code
Bits in the internal error code can be interpreted as follows:
Status bytes
Bit 7 Bit 6 Bit 5 Bit 4
0 0 0 0
1) 1) 1) 1)
Error bytes
Bit 15 Bit 14 Bit 13 Bit 12 Bit 11 Bit 10 Bit 9
fixed value
1)
generated only for sensor head BML SGA-AEZ1-LZZZ-TU11-S284,
2)
otherwise this bit is always 0
Tab. 6-3: Status and error bytes
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Value
31.25 µs
3300 ms
26 bits
17 bits
Status bytes
Bit 3 Bit 2 Bit 1 Bit 0
0 0 0 1
1) 1) 1) 1)
Bit 8
Description:
POS_INV: Position data invalid
–
– INCONS: Inconsistency error (absolute track
inconsistent)
– NO_TAPE: No magnetic tape detected
– DRIVE_IN: The sensor head is in the DRIVE-IN state
(see Operating notes on page 16)
– MEAS_ERR: Hardware measurement error (e.g.
internal undervoltage)
– TEMP_ERR: Error in external temperature processing
(e.g. wire break or no temperature sensor connected).
This error is generated only for model
BML SGA-AEZ1-LZZZ-TU11-S284, otherwise this bit
is always 0.
PARAM_ERR: Internal parameter error
–
– NOT_RDY: Sensor head is not ready, indicates a
major hardware error
Bits POS_INV, INCONS, NO_TAPE, DRIVE_IN,
MEAS_ERR, PARAM_ERR and NOT_RDY are used for
generating the position errors. Bit TEMP_ERR \is used only
for the temperature error generation (if applicable).
In case of a (singleturn) position error the XG1
bit is set. XG1 indicates that there is a serious
sensor error and the position is no longer valid.
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