SMC Networks LECSB2-T Series User Manual

12. ABSOLUTE POSITION DETECTION SYSTEM
12 - 10
12.6.2 Transfer method
The following shows a sequence how to turn on the base circuit while it is off state because SON is off,
EM2 is off, or an alarm is occurring. In the absolute position detection system, every time SON is turned
on, ABSM should always be turned on to read the current position in the driver to the PC or PLC...etc. The
driver transmits to the PC or PLC...etc the current position latched when ABSM switches from off to on. At
the same time, this data is set as a position command value inside the driver. Unless ABSM (ABS transfer
mode) is turned on, the base circuit cannot be turned on.
(1)At power-on
(a) Timing chart
OFF
ON
OFF
ON
OFF
ON
OFF
ON
OFF
ON
OFF
ON
OFF
ON
95 ms 95 ms
1)
2), 3)
Power
supply
SON
4)
ABSM
ABSR
ABST
Base circuit
RD
If SON is turned ON before ABSM is input
During transfer of ABS During transfer of ABS
(Note) (Note)
(Note) (Note)
(Note) (Note)
Absolute position
data
Operation
enabled
Operation
enabled
ABSB0
ABSB1
Absolute position
data
Note.
For details, refer to (1) (b) in this section.

SMC Networks LECSB2-T Series Specifications

General

Brand	SMC Networks
Model	LECSB2-T Series
Category	DC Drives
Language	English