Position Data Reading By Hold (Hd) Input - NSD ABSOCODER NCV-20NBNMP Specifications & Instruction Manual

(3) Position data reading by HOLD (HD) input

The HD input signal is used to HOLD position data outputs from the host controller. Either of the following 2
position data HOLD formats can be selected.
●Transparent format
Position data output updating is stopped by an HD 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 HD input signal is ON (L). Position data reading should
be performed after waiting period "t1" following the HD input signal ON.
When the HD input signal switches OFF (H), position data updates are synchronized with the LP output
signal.
Transparent format
●PC synchro format
Position data output updating occurs when the HD input signal status changes (leading edge or trailing
edge), and is not synchronized with the LP output signal.
Position data reading should be performed following waiting period "t1" after the HD input signal status is
changed by the host controller (PLC, etc.).
PC synchro format
Switch setting
Switch setting
33
t1
90μs
t1
230μs 200μs or more
t2
340μs
t2