8. Troubleshooting
8-5
TNU
3.
Other troubles
3-1
D-STEP cannot detect the driver controller
*
*
The last TJU should have the termination resistance ON.
Upper
AC 100V
Single phase, 200 V AC
(1)
(2)
(3)
(4)
(1)
(2)
(3)
(4)
(5)
(6)
(7)
24V
CN4
CN1
CN3
CN3
CN5
TNU
TJU
TSC/TLC
0V
TDO
TJU
0V
CN2
24V
(1)
(2)
(3)
(4)
(2)
(1)
5 V DC
Micro computer
THC
0V
-
+
-
+
CN3
CN5
CN7
Control
power
supply
24 V DC
24 V DC
Control
power
supply
Motor
power
supply
TACnet
Cable
Industrial Ethernet cable
Motor
power
supply
Control
power
supply
If D-STEP cannot detect the driver controller, or if the alarm goes off when the driver controller is
connected to TNU but not for the driver controller alone, confirm the following.
1) Properly set the termination resistance of the branch unit TJU (TERM.ON/OFF).
2) Make 0 V of TNU, TSC and TLC common.
Make common
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