Operations and Maintenance Manual

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JANUS
®
Multi-Protocol Reader Ver. 2: Maintenance Instructions
Confidential UM 360463-202: A12 (Draft) Page 137 of 291
© Kapsch TrafficCom Canada Inc. 2013
These drawings and specifications contain confidential and proprietary information and are the property of Kapsch TrafficCom Canada Inc. and are issued in strict
confidence and will be kept confidential and used solely for the purpose intended and for no other purpose and shall not be transmitted, reproduced, copied, and/or
used as the basis for manufacture or sale of apparatus unless otherwise agreed to in writing by Kapsch TrafficCom Canada Inc.
FILE: MPR2_OPERATIONS_AND_MAINTENANCE-MANUAL_REV A12.DOCX 05/08/2014 11:24
Kapsch TrafficCom
Lane Controller Port Module (LPM)
The LPM provides the serial communications connections between the CTM and the LC. The LC serial
communication signals travel to/from the CTM CGC board via the Distribution Module (DSM) to the
LPM serial port connectors. The LPM provides the 8 serial port connectors and integrated lighting
protection. The LPM is field replaceable.
The JANUS® Multi-Protocol Reader Ver. 2 is factory configured to support either an RS-232 or RS-422
interface. The data rate is configurable to standard rates up to 115.2 kbps.
Normally, each MRFM-S channel is assigned a unique LPM COM port; however, the MRFM-S
channels can be multiplexed by assigning multiple RF channels to one LC serial port, as necessary.
For a description of the serial interface protocol and file formats exchanged between a Lane Controller
and a Reader, refer to ICD 360450-111.
Sync Port Module (SPM)
The SPM provides a pathway for synchronization signals to and from both primary and secondary CTM
MC boards via the DSM to the SPM 6-terminal block connector where the synchronization STAR
network cables connect. The SPM is field replaceable.
A 4-Wire RS422 electrical connection at the front panel terminal block connects the SPM to the
synchronization network.
There are no active components installed on the SPM.
A three-position toggle switch mounted on the SPM provides Auto, Primary and Secondary redundancy
mode control signals via the DSM to the CTM.
Controller Module (CTM)
The CTM performs the Reader’s digital signal processing for OBUs. The CTMs may be swapped
without having to save the configuration file since the configuration data is stored in the CFMs mounted
on the DSM.
The CTM as a whole unit is field replaceable.
Main Controller (MC)
The MC is an off-the-shelf EBX form-factor industrial single-board computer. This unit contains the
CPU, memory and I/Os and is used to run the Reader software.
The MC receives OBU information from its associated CGC2 and performs a lane assignment for each
tag passing through the system via voting logic. It communicates with the LCs to report tag
transactions, accepts configuration messages, and provides status messages via a legacy LC serial
interface and/or an LC Ethernet interface. It detects and reports faults and can perform a switchover. It
offers Reader configuration via a browser interface, storage for transaction buffering, event logging,
and tag transaction and performance monitoring. It also supports remote software downloads. It
provides Inter-Reader communications with up to two other Readers, saves Reader configuration