HEIDENHAIN NPD 281 v.3 - Manual (Page 35)

35
Switching Inputs and Outputs EXT (X41)
Inputs at D-sub connection EXT (X41)
Pin Function
1, 10 0 V
2 Reset display to zero, clear error message
3 Set display to the value selected in P79
4 Ignore reference mark signals
5 Start series of measurements
6 Externally select display value for series of
measurements
7 Display MIN value of series of measurements
8 Display MAX value of series of measurements
9 Display difference MAX – MIN
22 Pulse: Output measured value
23 Contact: Output measured value
25 Enable or disable REF mode
(current REF status is changed)
12, 13, 24 Do not assign
11, 20, 21 Vacant
Special case: Display current measured value ACTL
If you wish to display the current measured value ACTL of a
series of measurements, note for inputs 7, 8 and 9:
Either none or more than one of these inputs must be active.
Switching Inputs and Outputs EXT (X41)
Danger to internal components!
Voltage sources for external circuitry must conform
to the recommendations in EN 50 178 for
low-voltage electrical separation. Connect
inductive loads only with a quenching diode
parallel to the inductance.
Only use shielded cable!
Connect the shield to the connector housing.
Outputs at D-sub connection EXT (X41)
Pin Function
14 Display value is zero
15 Measured value
≥
trigger limit A1 (P62)
16 Measured value
≥
trigger limit A2 (P63)
17 Measured value < lower sorting limit (P18)
18 Measured value > upper sorting limit (P19)
19 Error (see “Error Messages”)