Position Data Reading By Hold (Hd) Input - NSD ABSOCODER NCV-30HBNL8 Specifications & Instruction Manual

8-4-2. Position Data Reading by HOLD (HD) Input

The HOLD input signal is used to HOLD position data outputs from the host controller. Either of the
following two position data HOLD formats can be selected.
(1) Transparent format
Position data output updating is stopped by an HOLD input signal from the host controller (PLC, etc.). The
position data should be read at that time.
Updating of the position data is stopped while the HOLD input signal is ON (L). Position data reading
should be performed after waiting period "t1" following the HOLD input signal is ON.
When the HOLD input signal switches OFF (H), position data updates are synchronized with the LP
output signal. Next time, the "HOLD input signal" switches ON (L) in order to read the position data,
please input the HOLD input signal after waiting period "t2".
Position data
( D0 to D23 )
OFF(H)
HD
ON(L)
Transparent format
(Factory setting)
Important
The position data output will be all OFF (H), if the converter is powered ON while the
HOLD input signal is ON (L).
The HOLD input signal must be temporally OFF (H) in order to output the position
data.
t1
Switch setting
ON 1 2 3 4 5 6 7 8
Caution when the power supply turns ON
33
t2
t1
0.1ms
t2
0.4ms