Service manual

Configuring the Transportal Interlock Monitor
4-18 SM-1H1.0002, Rev. 1, July 2009
4.3.3. SNMP Trap Timestamp File
To prevent the resending of traps/informs upon a system restart, a timestamp of the last
trap/inform is stored locally on the unit. The “/home/microlok/snmp.trap.timestamp” file
contains this timestamp. When the software starts, this timestamp is read and used to prevent
any previously generated traps from being sent to the SNMP manager. The timestamp is
updated each time a new trap or inform is sent.
Figure 4-14. Typical snmp.trap.timestamp File Location
4.4. Invoking the MICROLOK II Development System
The MLK Development System (also referred to as “Dev Tool”) is a software application used to
communicate with installed MLK systems. This manual covers accessing the “Dev Tool” locally
(using a Windows-based computer; typically connected to port ETH0 on the TIM) or remotely
(using a network workstation; typically connected to port ETH1 on the TIM). This manual does
not cover detailed use of features typically available within the “Dev Tool.”
4.4.1. Locally at the TransPortal Interlock Monitor
A communication port on the local computer must be configured to interface with Ethernet
port ETH0 (typically) on the TIM. This is done using a serial-to-TCP/IP converter application
(TCP-Com) included in the “Dev Tool” installation package for this TIM application.