User's Manual

Introduction to the TTMS System
TTMS Reader
Tanker Truck Monitoring System- User’s Guide 12
Table 1-5. Display Unit Connector
Port Description
RS485 Connection to Protection Box
Table 1-6. Display Unit LED Status
LEDs Description
Individual Seal
LEDs
GREEN - Seal closed, non-tampered conditions
RED Steady - Seal open, tampered condition
RED Blinking – Seal not detected by Reader
System Status RED – general fault indication
GREEN – normal operation
GREEN Blinking – system initialization in process
Table 1-7. J1 Connector Pinout
Pin Signal
1 -Vin (GND)
2 RS485 B
3 RS485 COMM
4 RS485 A
5 +Vin (+12VDC)