
MTS FlexTest® Models 40/60/100/200 Controller Hardware
Model 494.42 Single-Station System Board
FlexTest Controller Configurations
80
J54 Digital Input Connections for the Model 494.42 System Board
Connector J54 Dig In accepts up to three optically isolated digital-input signals
from external devices. You can use these digital input signals to trigger test
events in controller applications.
Cable specification To maintain EMC compliance, the J54 Digital Input cable must comply with the
following specifications:
Connector type–9-pin, type D, male EMI connector.
Back shell–EMI metallized plastic or metal.
Cable–AWG and number of conductors as required. Braided shield with the
shield connected to the metallized backshell at the chassis.
494.42 System Board
J54 Digital Input
Logic Input Wiring
Power
100-240 VAC
50-60 Hz, 1-2 A
DA Output
J24
1
2
3
4
5
6
7
8
1
2
3
4
5
6
7
8
LAN 2 LAN 1
DEBUG
MOTOROLA
10/100 BASE T 10/100 BASE T
SCSI
BUSY
PIB
BUSY
PCI MEZZANINE CARD
PCI MEZZANINE CARD
J54 Dig InJ55 Dig Out
J43 INTLKJ56 UPS
J49 Aux Pwr J23 Estop/Run
J29 Load FrameJ25 HPU
J28 HSM
1
2
3
4
5
6
7
8
9
J54 Dig In
Input 1
+24 V
Low side of Opto
Inputs must be
jumpered to
ground. Use 22
AWG Jumper Wire.
Switch
or dry
contacts
Input 3
Input 2
+24 V DC
Opto-
Coupler
1
2
3
J54
External
Device
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