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TC Communications TC2400 User Manual

Rack mount/stand alone hi-speed multi-drop (ring) fiber optic modem
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TC2400 & TC2401
RACK MOUNT/STAND ALONE
HI-SPEED MULTI-DROP (RING)
FIBER OPTIC MODEM
User's Manual
MODEL:
S/N:
DATE:
Although every effort has been made to insure that this manual is
current and accurate as of date of publication, no guarantee is given
or implied that it is error free or accurate with regard to any
specification. TC Communications, Inc. reserves the right to
change or modify the contents of this manual at any time without
prior notification.
©
COPYRIGHT 1992-2007. ALL RIGHTS RESERVED.
TC Communications, Inc. 17881 Cartwright Road. Irvine, CA 92614
Tel: (949) 852-1972 Fax: (949) 852-1948 Web Site: www.tccomm.com Email: info@tccomm.com
Notice!

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Summary of Contents for TC Communications TC2400

  • Page 1 © COPYRIGHT 1992-2007. ALL RIGHTS RESERVED. TC Communications, Inc. 17881 Cartwright Road. Irvine, CA 92614 Tel: (949) 852-1972 Fax: (949) 852-1948 Web Site: www.tccomm.com Email: info@tccomm.com...

  • Page 2: Table Of Contents

    General ..........................16 Bench Test with Built-In Signal Generator ..............16 Local Electrical Loopback Bench Test ................17 Optic Loopback Bench Test (for TC2400 only) .............. 18 Remote Loopback Bench Test ..................19 Commonly Asked Questions ....................20 Chapter 5 - Component Placement ..............21 Chapter 6 - Specifications .................22...

  • Page 3: Chapter 1 - Overview

    Figure 1. When connected to a SCADA host controller, the Master unit (TC2400) can broadcast its poll messages to all the remote (TC2401) units (also referred to as Slave units). The Remote Terminal Unit (RTU) connected to the TC2401 will respond only to the poll with that RTU's own specified ID (or address), which is embedded in the poll message.

  • Page 4: Operation Of Self-Healing Ring

    RTU’s ID (or address), only the RTU with the correct ID responds to the Master’s polling. The TC2400’s function is to convert the electrical signal from the Host controller to a fiber optic signal and transmit that signal in both ring directions, as shown in Figure 2.
  • Page 5 TC2400 & TC2401 Ring User's Manual Rev. 1.7 When an optic fault condition occurs, as shown in Figure 4, the self-healing function will detect the fault and reroute the data, as shown in Figure 5. Figure 4. Optic Fault Conditions Figure 5.

  • Page 6: Fiber Optic Ring's Integrity Monitors

    Since communication between Master and Slave can be self-healed, it is necessary to monitor the ring's integrity and generate an alarm signal once the A-Ring or B-Ring has breakage (See Figure 7). The TC2400 has two loop monitors, one for the A-Ring and one for the B-Ring. The monitoring signal originates from the Master unit and travels along the A-Ring and B-Ring.

  • Page 7: Cable Fault Detection Between Slaves

    Rev. 1.7 Cable Fault Detection between Slaves The TC2400/2401's link monitor consists of cable fault detection rings that are implemented between Slaves and between the Slave and Master units. This monitor can detect cable breakage between any of the units, as illustrated in Figure 8.

  • Page 8: Led Functions

    The TC2400 (Master) and TC2401 (Slave) have the similar front panels with two exceptions: the Optic Fault LEDs on the TC2401 (Slave) can indicate a data wrap condition, while the Optic Fault LEDs on the TC2400 (Master) can indicate an invalid data transmission.

  • Page 9: Led Functions (Cont.)

    Internal SW2 DIP Switch Functions The Internal DIP Switches are located on the TC2400/2401’s PCB at board location SW2 (see Chapter 5). The DIP Switch functions for the Master and Slave units are as illustrated below.

  • Page 10: Anti-Streaming Timer

    The electrical signal interface is connected to the host or RTU via an RJ11 female connector at the rear panel of the TC2400/2401. The RJ11 DCE pin assignments are as illustrated in Figures 10, 11 & 12. For RS-232 interfaces, pin 5 is the input (TxD) pin while pin 4 is the output (RxD) pin.

  • Page 11: Four Wire Rs-422/Rs-485 Asynchronous

    Pins 3 and 4 are balanced output pins. Pin 3 is the positive output (RxD+) while pin 4 is negative (RxD-). Either pin 6 or pin 1 can be Signal Ground. Only RS-422/RS-485 Async communications can be used with the TC2400 due to the limited number of pins on the RJ-11 connector.

  • Page 12: Rs-485 Transition Timer Setup

    RS-485 Transition Timer Setup The Internal SW2 DIP Switches are located on the TC2400/2401’s PCB at board location SW2 (see Chapter 5). The SW2 DIP Switches #6, 7, and 8 functions are to set up the transistion time for the RS-485.

  • Page 13: Rj11-To-Db25 Female (Async Dce) Conversion Cables

    Figure 14. RS-422/485 (ASYNC DCE) DB25 Conversion Cable Optical Specifications The TC2400/TC2401 will work with all popular sizes and types of fiber optic cable. Transmission Distances Transmission distances of up to 4km* are typical over Multimode fiber at 850nm and 8km* at 1310nm.

  • Page 14: Chapter 2 - Installation

    (such as an RTU) to signal an alarm condition to the Host. Power Supply Typically, a 9V to 12V DC @500mA power supply is adequate for the TC2400/2401. The power plug is a terminal block connector with positive & negative polarity indicated on the rear panel of the unit. Alternate power sources are available as an option (see Chapter 6 - Specifications).

  • Page 15: Chapter 3 - Troubleshooting

    Chapter 3 - Troubleshooting Rev. 1.7 General Alarm conditions occur whenever an optical problem or "fault" is detected by the TC2400/2401. Under normal operation, all LEDs should be "On" (solid or blinking). All LEDs are "Off" If no LEDs are lit on the unit, check the DC power supply, terminal block connector plug, and/or power source.

  • Page 16: Chapter 4 - Bench Tests

    It is highly recommended to conduct these bench tests before actual installation. Bench testing will allow the user to get familiar with all the functions and features of the TC2400/2401 in a controlled environment. Knowledge of the TC2400/2401's functions and features will ease installation and troubleshooting efforts later on.

  • Page 17: Local Electrical Loopback Bench Test

    TC2400 & TC2401 Ring User's Manual Rev. 1.7 Local Electrical Loopback Bench Test Purpose: To verify the electrical cable connections, the electrical interface driver, and the receiver's Integrated Circuitry. Equipment Requirements: One (1) Bit Error Rate Test (BERT) Set with an appropriate interface module and connectors.

  • Page 18: Optic Loopback Bench Test (For Tc2400 Only)

    (On) position and all others to the right position. Connect an optic patch cord from "TxA" to "RxA." Connect a BERT tester to the RJ11 “AUX1” port on the TC2400. Set the tester up as a DTE device. The BERT tester should indicate a "SYNC" signal.

  • Page 19: Remote Loopback Bench Test

    TC2400 & TC2401 Ring User's Manual Rev. 1.7 Remote Loopback Bench Test Purpose: To test the Slave unit's optic functions and LED indicators. This procedure also enables the operator to become familiar with the self-healing function. When installing new Slave units in a network, a remote loopback test should be performed between each individual Slave and the Master unit.

  • Page 20: Commonly Asked Questions

    5. What is the built-in signal generator and how is it used ? Ans: For the TC2400 (Master), by sliding the SIG GEN (SW3) DIP switch to the down (On) position, a pulse signal will be generated to simulate an incoming signal on the RJ11's connector pins 2 & 5. In effect, this pulse signal is a simulated broadcast signal from the SCADA host, which will travel through the fiber to each Slave in the ring.

  • Page 21: Chapter 5 - Component Placement

    TC2400 & TC2401 Ring User's Manual Chapter 5 - Component Placement Rev. 1.7 The TC2400 (Master) and TC2401 (Slave) have similar PC Boards. TC2400R/S -or- TC2401R/S Internal Switches BUZZER External DIP Switches (accessible from front panel) Figure 19. Component Locations on the TC2400/2401's PCB...

  • Page 22: Chapter 6 - Specifications

    Bit Error Rate ..................1 in 10 or better Visual Indicators .... BRD-1, BRD-2, RSP-1, RSP-2, LPA, LPB, TxA (TC2400 only), ........TxB (TC2400 only), A2B (TC2401 only), B2A (TC2401 only), ..........RxA, Sync-A, RxB, Sync-B, PWRA, PWRB, Vcc, ALARM.

  • Page 23: Return Policy

    Buyer should notify TC Communications, Inc. promptly in writing of any claim based upon warranty, and TC Communications, Inc., at its option, may first inspect such goods at the premises of the Buyer, or may give written authorization to Buyer to return the goods to TC Communications, Inc., transportation charges prepaid, for examination by TC Communications, Inc.

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Tc2401

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