TC Communications TC2200R, TC2200S, TC2201R, TC2201S User Manual

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Page 1

TC2200R/S

MULTI-DROP (BUS)

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 this document 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.

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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TC2200R/S Bus

User's Manual

Rev. 2.2

Table of Contents

Chapter 1 - Overview ...................................................................................................3

Description.......................................................................................................................................... 3

Application Topologies...................................................................................................................... 4

LEDs, DIP Switches and Connectors.............................................................................................. 5

Internal SW1 DIP Switch Functions ................................................................................................ 6

Single-Master Units ..................................................................................................................... 6

Multi-Master Units (Optinal) ....................................................................................................... 7

External SW2 DIP Switch Functions ............................................................................................... 8

Pin Assignments and Connection ................................................................................................... 8

RS-422 & RS-485 Termination Resistors.....................................................................................10

Fiber Optic Specifications ..............................................................................................................10

Transmission Distances (typical) ............................................................................................10

Launch Power & Sensitivity .....................................................................................................10

Chapter 2 - Installation .............................................................................................. 11

Unpacking the Unit ..........................................................................................................................11

Equipment Location ........................................................................................................................11

Dry Contact Alarm Relay.................................................................................................................11

Power Supply ...................................................................................................................................11

Installation Procedure Summary ...................................................................................................11

Installation Example & RS-232 Virtual Connection ..............................................................12

Chapter 3 - Troubleshooting ...................................................................................... 13

General ..............................................................................................................................................13

All LEDs are Off................................................................................................................................13

Alarm LED .........................................................................................................................................13

Optic Cable Types............................................................................................................................13

Calculating the Loss on the Fiber .................................................................................................13

Chapter 4 - Bench Tests ............................................................................................ 14

General ..............................................................................................................................................14

Testing Considerations .............................................................................................................14

Bench Test With Built-In Signal Generator..................................................................................14

Optic Loopback Bench Test ...........................................................................................................15

Local Electrical Loopback Bench Test..........................................................................................16

Remote Loopback Bench Test .......................................................................................................17

Commonly Asked Questions..........................................................................................................18

Chapter 5 - Component Placement ............................................................................ 20

Chapter 6 - Specifications.......................................................................................... 21

Appendix A - DB25 to 2 RJ-11’s Adapter .................................................................... 22

Appendix B - Warranty............................................................................................... 23

Return Policy ....................................................................................................................................23

Warranty ............................................................................................................................................23

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TC2200R/S Bus

Chapter 1 - Overview

Description

The TC2200R/S and TC2201R/S are multi-drop fiber optic modems that convert electrical signals to fiber optic signals (and vice-versa). At least one TC2200 (Master) unit and one TC2201 (Slave) unit are required to communicate with each other. The Master unit is connected to a Host computer (or controller), while the Slave unit can be connected to an RTU (Remote Terminal Unit), PLC (Programmable Logic Controller) or any poll-response type device. Typical applications include SCADA, process control, traffic control and energy management.

In a poll-response environment, the host controller broadcasts polling messages to every RTU. Because the polling message is embedded with a specific RTU’s ID (or address), only the RTU with the correct ID responds to the Master’s polling. The Master (TC2200) unit's function is to convert the electrical signals (RS-232, RS-422 or RS-485) from the Host controller to fiber optic signals, then transmit the signals in both bus directions to the Slaves, as illustrated in Figure 1.

The first Slave in the bus intercepts the Master's broadcast message and forwards it to its downstream Slave unit. Each subsequent Slave forwards the broadcast message until it reaches the last Slave in the bus (designated as the End Unit).

User's Manual

Rev. 2.2

Figure 1. Master Unit's Broadcast & Receive Directions

The Slave (TC2201) unit's function is similar to the Master's; it converts fiber optic signals from the Master back into electrical signals (RS-232, RS-422 or RS-485) so that the RTU or PLC connected to the Slave receives the polling message from the Host. The Slave unit then converts the electrical response signals from the RTU or PLC to fiber optic signals, then transmits them back to the Host (via the Master) in both bus directions, as illustrated in Figure 2.

Figure 2. Slave Unit's Response & Receive Directions

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TC2200R/S Bus

Application Topologies

The optic signal transmitted to the right (or East) side of the unit is designated as the “A” direction, while the optic signal transmitted to the left (or West) side of the unit is designated as the “B” direction. Therefore, the optic transmitter A (labeled “TxA”) is always connected to the next unit’s optic receiver A (labeled “RxA”). The same applies to the left (or "B") direction. Because the TC2200/2201 can transmit to and receive from two directions, it allows for three different topology arrangements, as illustrated below:

Figure 3. Single Master Located at the End of a Bus

User's Manual

Rev. 2.2

Figure 4. Single Master Located in the Middle of a Bus

Note: The Dual Master (optional) topology enables fault tolerance (similar to a self-healing function) in many applications. If a fiber link becomes degraded or broken in this topology, the Host controller can detect that the RTU is not responding to its broadcast message. When the controller's software is configured for this type of fault detection, it will then re-route the broadcast message to the secondary Master (through a secondary port), thereby reaching the lost Slave unit and RTU(s).

Figure 5. Dual Masters Located at Each End of a Bus

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LEDs, DIP Switches and Connectors

234

DIS ALM

LBSIG GEN

MASTER: (solidly lit) - Unit is configured as a Master

SLAVE : (solidly lit) - Unit is configured as a Slave

DCE : (solidly lit) - Electrical interface is configuraed as DCE

Rx-A : (solidly lit) - The optic signal received at "RxA"

BRD-1: for TC2201- Broadcast msg (Ch1) from remote Master

Vcc : (solidly lit) - Operating voltage derrived from PWRA

PWRAPWRBVccALAR

TC2200R/S Bus

User's Manual

Rev. 2.2

for TC2200- Broadcast msg (Ch1) from local Host BRD-2: for TC2201- Broadcast msg (Ch2) from remote Master

for TC2200- Broadcast msg (Ch2) from local Host RSP-1: for TC2201- Response msg (CH1) from local RTU

for TC2200- Response msg (CH1) from remote Slave RSP-2: for TC2201- Response msg (CH2) from local RTU

for TC2200- Response msg (CH2) from remote Slave

BRD-1 BRD-2 RSP-1 RSP-2

MASTER SLAVE DCE DTE

TxB

RxA

RMTLB

MULTI-DROP MODEM

TxB: Optic Transmitter "B" RxA: Optic Receiver "A"

SW1: Remote Loopback (for diagnostics) SW2: Local Loopback (for diagnostics) SW3: Signal Generator (for diagnostics) SW4: Disable Alarm

LOC

is above the sensitivity threshold SynA : (solidly lit) - Data packet received at optic "RxA"

is valid Rx-B : (solidly lit) - The optic signal received at "RxB"

is above the sensitivity threshold SynB : (solidly lit) - Data packet received at optic "RxB"

is valid

TxA

1 2

RxB

Rx-A

SynA

Rx-B

SynB

TxA: Optic Transmitter "A" RxB: Optic Receiver "B"

DTE : (solidly lit) - Electrical interface is configured as DTE

Figure 6. TC2200/2201's Front Panel

PWRA : (solidly lit) - The power source connected to Power jack "A" is powering the unit

PWRB : (solidly lit) - The power source connected to Power jack "B" is powering the unit (Both PWRA & PWRB will light when power redundancy is utilized)

and/or PWRB is valid ALARM: (flashing) - Optic signal lost from "RxA" or "RxB"

- The Packet received is invalid

- The Anti-Streaming timer has expired

- The unit is in a diagnostic mode

Figure 7. TC2200/2201's Rear Panel

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TC2200R/S Bus

Internal SW1 DIP Switch Functions

The internal SW1 DIP switches are used for application setup. All units are configured and tested at the factory and two are typically pre-labeled according their position in the bus (#1 is the left-end unit in the bus; #2 is the right-end unit).

Single-Master Units

SW1_1 & SW1_2 disable the "RxA" & "RxB" optic receivers when switched to the Left position. These two switches should be set according to the position of the unit in the bus. Typically, "RxA" is disabled on the first unit (Master or Slave) and "RxB" is disabled on the last unit (End unit). All other units (between the first and last units in the bus) should have SW1_1 & SW1_2 in the Right position for normal multi-drop operation.

The Master unit (TC2200) and Slave unit (TC2201) are interchangeable by sliding SW1_3 to the left or right. NOTE 1: For customers who purchased the TC2200s before February 1, 2006, follow the SW1_3 settings

for interchanging the Master and Slave units as shown on the dialog box above.

User's Manual

Rev. 2.2

NOTE 2: For customers who purchased the TC2200s after February 1, 2006, the SW1_3 settings for interchanging the Master and Slave units are reversed than the settings shown on the dialog box above.

To set the unit as a Master, set SW1_3 to the Left “On” position. To set it as a Slave unit, set SW1-3 to the Right “Off” position. The front panel's "MASTER" or "SLAVE" LED will light to indicate which configuration the unit has. This is true for all types of electrical interfaces.

If the TC2200/2201 has an RS-422 or RS-485 (or RS-530) interface, then the unit's DTE or DCE configuration can be changed by flipping SW1_4 (left for DTE; right for DCE). If the TC2200/2201 has an RS-232 interface, then the unit's DTE or DCE configuration can ONLY be changed by replacing the unit's interface module (from the factory). The front panel's "DTE" or "DCE" LED will light to indicate which configuration the unit has.

The TC2200/2201 has a built-in Anti-Streaming function. Anti-Streaming can prevent a defective RTU from blocking out an entire response channel; once activated, the electrical signal from the defective RTU is blocked and the entire response channel is disconnected from the Slave unit. This feature can be disabled by sliding SW1_5 to the Right position.

SW1_6 on the internal DIP switch is not used and should be kept in the Right (Off) position. SW1_7 & SW1_8 control the RS-485 transition timer setup. For RS-232 and RS-422 interfaces, these

switches should be kept in the Right (Off) position. For a 2-wire or 4-wire RS-485 interface, the electrical signal bus will automatically transition to high impedance after transmitting. These two switches establish the duration period(after the last bit is transmitted) before the RS-485 driver transitions to the high-impedance receiver mode. The transition timer should be set according to the following table (Default = both Off):

Baud SW1_8 SW1_7 SW1_6

9600

19.2K

38.4K & up

Figure 8. RS-485 Transition Timer Setup Table

On Off

Off On

On On

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Not Used Not Used Not Used

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TC2200R/S Bus

Multi-Master Units

If the units were ordered for a Multi-Master Multi-Drop application (optional), the following information applies to their configuration. The Multi-Master units are (by default) DCE devices. The internal SW1 DIP switch functions and some features for Multi-Master units differ slightly from Single-Master models.

The Master unit (TC2200) and Slave unit (TC2201) are interchangeable by sliding SW1_3 to the Left (Slave) or Right (Master) position. The front panel's "MASTER" or "SLAVE" LED will light to indicate which configuration the unit is utilizing. The Auto-Master Mode allows each unit to temporarily act as a Master unit until the attached device stops transmitting for a predetermined amount of time (based on the baud switch settings of SW1_7 & SW1_8).

User's Manual

Rev. 2.2

SW1_6 on the internal DIP switch is not used and should be kept in the Right (Off) position. SW1_7 & SW1_8 control the RS-485 transition timer setup and the Master/Slave transition time. For a 2-

wire or 4-wire RS-485 interface, the electrical signal bus will automatically transition to high impedance after transmitting. These two switches establish the duration period (after the last bit is transmitted) before the RS-485 driver transitions to the high-impedance receiver mode.

The transition timer also establishes the interval of time that Master unit “holds” the bus (after the last data bit is received from the local RTU) before automatically transitioning back into the Slave mode. The transition timer should be set according to the following table (Default = both Off):

Baud SW1_8 SW1_7

9600

19.2K

On Off Off On

SW1_6

Not Used Not Used

38.4K & up

Figure 9. Transition Timer Setup Table

On On

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Not Used

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TC2200R/S Bus

234

123

DIS ALARM (Disable Alarm)

)SIG General (Signal Generator)

External SW2 DIP Switch Functions

The external DIP switches (located on the front panel) are used for diagnostic testing. When SW2_1, SW2_2 or SW2_3 are in the Down position, the "ALARM" LED will blink, indicating an abnormal condition. During normal operation, all switches should be kept in the Up position.

RMTLB (Remote Loopback)

LOCLB (Local Loopback

SW2_1 (RMTLB): When this switch is in the Down position, the composite optical signal is received and decoded, then looped back to the transmitter for diagnostic testing.

SW2_2 (LOCLB): When this switch is in the Down position, the electrical signal received (on pins 2 & 4 for an RS-232 interface) is looped back internally (to pins 3 & 5 for an RS-232 interface) for diagnostic testing.

SW2_3 (SIG GEN): The TC2200/2201 has a built-in signal generator. By sliding this switch to the Down position, a slow-rate pulse signal of logic "highs" and "lows" will be sent through the fiber to all units in the bus, simulating a broadcast or response message. The "BRD" LEDs on the Master and "RSP" LEDs on the Slaves will flash, indicating transmission & receipt of the other's signal.

SW2_4 (DIS ALARM): When this switch is in the Down position, the audio alarm buzzer and dry contact alarm relay switch are disabled.

User's Manual

Rev. 2.2

Pin Assignments and Connection

The DB25 connector on the rear panel of the TC2200/2201 provides for the connection of the user’s RS232, RS-422 or RS-485 devices. The pin assignments for each type of interface are illustrated in the diagrams that follow.

For units with an RS-232 interface, two separate channels are provided for handshaking signals or the connection of an additional device (this additional channel is not present on Multi-Master units). Pins 2 & 4 are inputs while pins 3 & 5 are outputs.

Figure 10. RS-232 Pin Assignments & Connection Diagram

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For 2-wire RS-485 interfaces, pins 3(-) & 16(+) are input/outputs.

TC2200R/S Bus

User's Manual

Rev. 2.2

Figure 11. 2-wire RS-485 Connection/Logic Diagram

For RS-422 and RS-485 4-wire interfaces, pins 2(-) & 14(+) are inputs while pins 3(-) & 16(+) are outputs.

Figure 12. 4-wire RS-422/RS-485 Connection/Logic Diagram

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TC2200R/S Bus

TC2200R/S

TC2201R/S

W1: (Installed)

RS-422 & RS-485 Termination Resistors

A termination resistor is usually necessary for RS-422 and RS-485 applications. Without proper termination, the error rate of data transmission may be high due to an "echo" effect on the electrical connection. With the addition of a termination resistor at the beginning or end of the electrical bus, this echo effect is greatly reduced. The termination resistors are 100 to 130 ohm resistors located inside the TC2200/2201.

Two jumpers, located on the Interface Module at board locations "W1" & "W5," control the termination resistance on each unit (factory default = installed). "W5" controls the resistance for the unit's receiver, while "W1" controls the transmitter's resistance. Proper line termination is usually accomplished by leaving the “W5” jumper installed at both ends of the link. There is no termination resistor required for RS232 applications.

User's Manual

Rev. 2.2

Terminates pins 2 & 14

W5: (Installed) Terminates pins 3 & 16

Female DB25

TB3

INTERFACE SIMM MODULE

8 7 6 5 4 3 2 1

SW1

TxB TxARxA RxB

SW2

1 2 3 4

TB2 TB1

Figure 13. Termination Resistor Locations

Fiber Optic Specifications

Transmission Distances (typical)

The TC2200 and TC2201 are compatible with all popular sizes and types of fiber. Transmission distances up to 3km* are typical over Multimode fiber at 850nm and 4km* at 1310nm. Distances to 30km* are typical over Single Mode fiber at 1310nm.

Launch Power & Sensitivity

Transmitter: LED/ELED; typical Launch Power - -20dBm* (850nm/1310nm MM, @62.5/125µm)

Receiver: PIN Diode; typical Sensitivity - -36dBm* (850nm/1310nm MM, @62.5/125µm)

*Launch power, sensitivity & distance are listed for reference only. These numbers may vary.

-16dBm* (1310nm Single Mode, @9/125µm)

-36dBm* (1310nm Single Mode, @9/125µm)

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TC2200R/S Bus

Chapter 2 - Installation

Unpacking the Unit

Before unpacking any equipment, inspect all shipping containers for evidence of external damage caused during transportation. The equipment should also be inspected for damage after it is removed from the container(s). Claims concerning shipping damage should be made directly to the pertinent shipping agencies. Any discrepancies should be reported immediately to the Customer Service Department at TC Communications, Inc.

Equipment Location

The TC2200/2201 should be located in an area that provides adequate light, work space and ventilation. Avoid locating it next to any equipment that may produce electrical interference or strong magnetic fields, such as elevator shafts and heavy duty power supplies. As with any electronic equipment, keep the unit from excessive moisture, heat, vibration and freezing temperatures.

Dry Contact Alarm Relay

A terminal block connector at the rear panel provides for the Dry Contact Alarm Relay Normally in the OPEN position, any alarm condition will force the switch to a CLOSED position. This relay can be used in conjunction with an external device (such as an RTU) to signal an alarm condition to the Host.

User's Manual

Rev. 2.2

Power Supply

Typically, a 9V to 12V DC power supply @650mA is adequate for the TC2200/2201. The power plug is a terminal block connector with positive & negative polarity indicated on the rear panel of the unit. Two connectors, labeled "PWR A" & "PWR B" are provided for a built-in power redundancy feature. While only one connection is required to power the unit, both connectors can be used simultaneously. When power redundancy is utilized, both power "A" & "B" share the load. If one power supply fails, the other will take over the full load. Alternate power sources are available as an option (see Chapter 6 - Specifications).

Installation Procedure Summary

The TC2200 and TC2201 are designed for quick and easy installation. Before installing, however, make sure all DIP switches on the front panel are in the Up position and double-check the polarity at the DC power's terminal block connector(s).

A. Connect the Host's RS-232, RS-422 or RS-485 signal (see pages 8 & 9 for pin assignments) to the

TC2200 (Master) unit's DB25 connector. B. Configure the Master unit's internal DIP switch (see pages 6 & 7) and connect power to the Master unit.

Run an Optic Loopback Test and Local Electrical Loopback Test (see pages 15 & 16).

C. Connect the RTU's RS-232, RS-422 or RS-485 signal to the TC2201 (Slave) unit's DB25 connector. D. Configure the End Unit's internal DIP switch (see pages 7 & 8) and connect power to the Slave unit.

Run an Optic Loopback, Local Loopback and Remote Loopback Test (see pages 15, 16 & 17). E. Configure and connect additional Slave units into the bus (see page 4 for application topologies). Run

an Optic Loopback, Local Loopback and Remote Loopback Test for each additional unit installed. F. Verify System Integrity:

At Master and Slave units, check "Rx-A," "Rx-B," "SynA" and "SynB" LED indicators. Verify and record the optical cable loss for each link in the application after installation is complete. This

reading will both verify the integrity of the circuit and provide a benchmark for future troubleshooting efforts (see Chapter 3 - Troubleshooting).

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TC2200R/S Bus

RTU

RxA

RxB

TxB

Installation Example & RS-232 Virtual Connection

To install a multi-drop bus topology, follow the example below. The SCADA Host controller is connected to the Master unit (TC2200), and four RTUs are connected to Slave units (TC2201). Notice the fiber cable from each unit's optic "TxA" (on the right side) is connected to the next unit's optic "RxA," while each unit's optic "TxB" (on the left side) is connected to the next unit's optic "RxB." In this example, the "RxA" on the Master unit and "RxB" on the last Slave unit (End unit) should be disabled.

User's Manual

Rev. 2.2

RSP

CTS

BRD

RTS

TxA

RxA

RxB TxB TxB TxB

TxB

BRD BRD BRD RSP

CTS CTS CTS CTS

RSP RSP RSP BRD

RTS RTS RTS RTS

5 5 5 5

3 3 3 3

4 4 4 4

2 2 2 2

TxA TxA TxA TxA

RxA RxA RxA

RxB RxB RxB

Note 1: The internal DIP Switch functions for Multi-Master units differ slightly from the Single Master units shown (see page 7). *Note 2: For units purchased after February 1, 2006, the settings of SW1_3 are reversed than for the settings shown on the

diagrams above. ; Set SW1_3 to the Left (On) for Master and to the Right (Off) for Slave, see notes1 & 2 on page 6. (Units bought prior to February 1, 2006 hold the same settings as shown above)

Figure 14. RS-232 Installation Example

RTU RTU RTU

Figure 15. RS-232 Virtual Connection Diagram

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TC2200R/S Bus

Chapter 3 - Troubleshooting

General

Alarm conditions occur whenever an optical problem or "fault" condition is detected by the TC2200/2201. Under normal operation, all LEDs should be lit, with the exception of either the "DTE" or "DCE" and "ALARM" LEDs. The "BRD" and "RSP" LEDs will only light when there is activity on the bus.

All LEDs are Off

If no LEDs are lit on the unit, check the DC power supply, terminal block connector plug, and/or the power source. If the problem persists, contact the Technical Support Department at TC Communications, Inc.

Alarm LED

When an alarm condition is detected, the Alarm LED will flash rapidly and one or more additional LED will flash. The following fault conditions will cause the alarm to be triggered:

1. Optic signal lost from "RxA" or "RxB."

2. Optic signal is marginal, which causes invalid data packets to be received; either the "SynA" or "SynB"

LED will be flashing.

User's Manual

Rev. 2.2

3. Optic overdrive can cause the "SynA" or "SynB" LED to flash while optic "A" and/or "B" still receives

a valid signal.

4. One or more of the front panel's DIP switches is in the Down position.

5. The Anti-Streaming function has been activated.

Optic Cable Types

Conventionally, fiber optic cable with yellow-colored insulation is used for Single Mode applications; gray or orange-colored insulated cable is for Multimode use. If Multimode cable is used in a Single Mode application, the test results could be erroneous and confusing.

Calculating the Loss on the Fiber

The fiber optic link and/or connectors are frequently the source of various problems. Check out the connectors and the integrity of the link first. Ideally, the link should be calibrated for total loss after the installation has been completed. This will accomplish two things: (1) it will verify that the total loss of the link is within the loss budget of the device and (2) it will provide a benchmark for future testing. For example, a system that has been tested as having 6dB total loss when installed and suddenly tests out as having a loss of 10dB probably has a connector or link problem.

These are the reference values we use to calculate the loss on the fiber:

Multimode 850nm : 3 dB loss per km on 62.5/125µm cable* Multimode 1310nm : 2 dB loss per km on 62.5/125µm cable* Single Mode 1310nm : 0.5 dB loss per km on 9/125µm cable* Single Mode 1550nm : 0.25 dB loss per km on 9/125µm cable*

*These numbers are listed for reference only. We recommend an OTDR reading be used to determine actual link loss.

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TC2200R/S Bus

Chapter 4 - Bench Tests

General

It is highly recommended to conduct bench tests before actual installation. Bench testing allows the user to become familiar with all the functions and features of the TC2200/2201 in a controlled environment. Knowledge of these functions and features will ease installation and troubleshooting efforts later on.

Testing Considerations

You may substitute the SCADA Host controller with a BERT (Bit Error Rate Tester) test set to generate a simulated RS-232, RS-422 or RS-485 signal. For each test, double-check the LED indicators and DIP switch settings on all units.

The Anti-Streaming function applies to both the Data (pin 2 on the DB25's RS-232 interface) and RTS signals (pin 4 on the DB25's RS-232 interface) from the RTU. The Anti-Streaming function can be disabled by sliding SW5 on the internal DIP switch to the Left position.

The "BRD" and "RSP" LEDs flash at the rate of the transmitted or received data. If you are sending bus data, the LEDs will only flash when data is present. Under this condition they may appear dim or even unlit at times. If this is the case, you may want to increase your data rate and send it in a continuous data format while testing.

Bench Test With Built-In Signal Generator

The TC2200 (Master) has a built-in signal generator to simulate a broadcast message from a SCADA Host, while the TC2201 (Slave) has a signal generator to simulate an RTU's response message. The built-in signal generator is a pulse signal indicated by a blinking LED. The flash rate is intentionally reduced for easy visual confirmation.

1. Set up the bench test as shown in Figure 16. At the Master unit, turn on the "SIG-GEN" by sliding SW2_3

(on the front panel) downward. The "BRD-1" and "BRD-2" LEDs on the TC2200 (Master) should start

blinking. Likewise, the "BRD-1" and "BRD-2" LEDs on all of the TC2201 (Slave) units should also blink,

indicating receipt of the Master's broadcast signal.

User's Manual

Rev. 2.2

2. At any Slave, turn on the "SIG-GEN" by sliding SW2_3 (on the front panel) downward. The "RSP-1"

and "RSP-2" LEDs should start blinking. Verify that the Master's "RSP-1" and "RSP-2" LEDs also blink,

indicating receipt of the Slave's simulated response.

TxA TxA TxA TxATxA RxA RxA RxA RxARxA

RxB RxB RxB RxB

RxB

TxB

Note 1: To perform this test on Multi-Master units, one unit must be configured as a dedicated Master (by sliding SW1_3 to the Right) and all other units must be configured as dedicated Slaves (by sliding SW1_3 to the Left & SW1_4 to the Right).

*Note 2: For units purchased after February 1, 2006, the settings of SW1_3 are reversed than for the settings shown on the diagrams above. ; Set SW1_3 to the Left (On) for Master and to the Right (Off) for Slave, see notes1 & 2 on page 6. (Units bought prior to February 1, 2006 hold the same settings as shown above). The internal DIP Switch functions for Multi-Master units differ slightly from the Single Master units shown (see page 7).

TxB TxB TxB TxB

Figure 16. Bench Test Connection Diagram

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TC2200R/S Bus

Optic Loopback Bench Test

Purpose: To test the broadcast (or response) and receive capabilities of a Master or Slave unit

without any other units attached.

Equipment Requirements: One (1) Bit Error Rate Test (BERT) Set with appropriate interface module.

One (1) optical jumper cable (patch cord) with appropriate connectors.

Procedure: Set up the bench test as shown in Figure 17. To test the "TxB" to "RxA" loop, connect

an optic patch cord from optic "TxB" to optic "RxA." Set the unit's internal DIP switch SW1_2 to the Left position (to disable "RxB"). Connect a BERT tester to the DB25 connector. Set the tester up as a DTE or DCE device (the opposite of the unit's lit "DCE" or "DTE" LED indicator). The BERT tester should indicate a "SYNC" signal.

Remove the patch cord from "TxB" and "RxA" and switch SW1_2 back to the Right position. The "SYNC" light on the tester should turn "Off."

To test the "TxA" to "RxB" loop, repeat the steps above with an optic patch cord from "TxA" to "RxB." Set internal DIP switch SW1_1 to the Left position (to disable "RxA"). The BERT tester should indicate a "SYNC" signal. After testing is complete, return all switches to their normal operating positions.

User's Manual

Rev. 2.2

Figure 17. Optic Loopback Bench Test Connection Diagram

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TC2200R/S Bus

Local Electrical Loopback Bench Test

Purpose: To verify the DB25's cable connections, the electrical interface driver, and the receiver's

Integrated Circuitry.

Equipment Requirements: One (1) Bit Error Rate Test (BERT) Set with appropriate interface module.

Procedure: Set up the bench test as shown in Figure 18. Set SW2_2 ("LOCLB" on the front panel)

to the Down position and the "ALARM" LED should start flashing. Set the tester up as a DTE or DCE device (the opposite of the unit's lit "DCE" or "DTE" LED indicator). The "BRD-1" & "BRD-2" and "RSP-1" & "RSP-2" LEDs should be dimly lit, showing the status of the looped signal. The BERT tester should indicate a "SYNC" signal. This test should be performed on each individual unit in the application.

User's Manual

Rev. 2.2

Figure 18. Local Electrical Loopback Bench Test Connection Diagram

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TC2200R/S Bus

Remote Loopback Bench Test

Purpose: To test the Slave unit's optic functions and LED indicators and to verify the integrity of

the fiber optic link. When installing new Slave units in a network, a Remote Loopback test should be performed between each individual Slave and the Master unit (one at a time). This will verify the integrity of the system.

Equipment Requirements: One (1) Bit Error Rate Test (BERT) Set with appropriate interface module.

At least two (2) optical jumper cables (patch cords) with appropriate connectors.

Procedure: Set up the bench test as shown in Figure 19. Make sure to set the internal DIP switches

accordingly for each unit. At the front panel of the Slave unit to be tested, slide SW2_1 (RMTLB) to the Down position. Set the tester up as a DTE or DCE device (the opposite of the Master unit's lit "DCE" or "DTE" LED indicator). The "BRD-1" & "BRD-2" and "RSP-1" & "RSP-2" LEDs should be dimly lit, showing the status of the looped signal. The BERT tester (connected to the Master) should indicate a "SYNC" signal.

User's Manual

Rev. 2.2

Figure 19. Remote Loopback Bench Test Connection Diagram

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TC2200R/S Bus

Commonly Asked Questions

1. Where is the best place to begin installation for a bus topology application ?

Ans: Begin with the Master unit. The first priority is to get familiar with the functions of DIP switches

and LEDs.

2. How do I know if the optic link is open or closed ?

Ans: The "SynA" and/or "SynB" LEDs on the affected units will flash if the associated link is not

closed.

3. What direction is the optic signal traveling in ?

Ans: The fiber signal that transmits to the East side of the unit is designated as "A", which means from

one unit's optic "TxA" to the next unit's optic "RxA." The fiber signal that transmits to the West side of the unit is designated as "B," which means from one unit's optic "TxB" to the next unit's optic "RxB."

4. What do the front panel's "BRD" & "RSP" LEDs mean ?

Ans: The "BRD-1" & "BRD-2" stand for Broadcast Data. They are the signals from the SCADA Host

(connected to the Master) to be transmitted (or broadcasted) to the Slaves. The "BRD-1" & "BRD-2" LEDs on the Master unit reflect the incoming signal status of the DB25's connector pins 2 & 4 (for an RS-232 interface) from the SCADA host. On the Slave units, the "BRD-1" & "BRD2" are the received broadcast signals originating from the SCADA host.

User's Manual

Rev. 2.2

The "RSP-1" & "RSP-2" stand for Response Data. On the Slave unit, they are the response signals from the local RTU to be transmitted to the Master. The "RSP-1" & "RSP-2" LEDs on the Slave unit reflect the outgoing signal status of the DB25's connector pins 3 & 5 (for an RS232 interface) from the local RTU. On the Master, the "RSP-1" & "RSP-2" are the received response signals originating from the RTU.

The following tables explain the definitions of each "BRD" and "RSP" LED for Master & Slave units for an RS-232 interface:

Figure 20. "BRD" and "RSP" LED Definitions for an RS-232 Interface

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TC2200R/S Bus

5. What is the built-in signal generator and how is it used ?

Ans: By sliding SW2_3 ("SIG GEN" on the front panel) to the Down position, a pulse signal will be

generated to simulate an incoming signal on the DB25's connector pins 2 & 4 (for an RS-232 interface). 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 bus. This function is very useful for troubleshooting and verifying network integrity. The slow pulse rate of the LEDs can be easily confirmed at any Slave location.

6. What is the difference between the front panel's "Rx-A" and "SynA" LEDs ?

Ans: "Rx-A" indicates the receiving optical signal strength. When the "RxA" optic signal is above the

sensitivity threshold (typically from -33dBm to -36dBm) the "Rx-A" LED will light (solid). A marginal or fault condition causes it to flash. In some cases, the "RxA" optic signal is above the sensitivity threshold but is of poor quality. This will result in an invalid data packet being received, causing the "SynA" LED to flash.

The possible fault conditions could be one of the following:

A. Received optic signal's power is marginal (at the borderline of the sensitivity threshold). B. Receiver is being overdriven (optic signal strength is too strong). C. Multimode cable is used on a Single Mode unit and causes the receiver to be overdriven.

User's Manual

Rev. 2.2

D. Optic cable is cross-connected with another vendor's product and the TC2200/2201 can not

recognize the data packet being transmitted.

The "SynA" LED lights (solid) when the data packet being received at optic "RxA" is validated. An invalid data packet will cause the "SynA" LED to flash.

The same applies to the "Rx-B" and "SynB" LEDs for the B-Link.

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TC2200R/S Bus

User's Manual

Chapter 5 - Component Placement

Rev. 2.2

The TC2200/2201 is equipped with multiple DIP switches for application setup and Panel LEDs to indicate the status of electrical and optical signals. These features can ease installation and facilitate troubleshooting. The following diagram depicts the board locations of several key components.

Figure 21. TC2200/2201 Component Placement Diagram

SW2

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Chapter 6 - Specifications

Data Rates

Async .....................................................................................................up to 38.4 Kbps

Optical

Transmitter ...................................................................................... LED/ELED/LASER**

Receiver ..........................................................................................................PIN Diode

Wavelength ............................................................................ 850nm/1310nm Multimode

....................................................................................................... 1310nm Single Mode

Fiber Optic Connectors ..................................................................... ST* (optional FC)

Loss Budget

............................................................... 15dB Multimode 850nm/1310nm @62.5/125µm

............................................................................20dB Single Mode 1310nm @9/125µm

Electrical

Connector ............................................................................(DCE or DTE) DB25 Female

Interface ................................................................................ RS-232, RS-422 or RS-485

TC2200R/S Bus

User's Manual

Rev. 2.2

System

Bit Error Rate ........................................................................................ 1 in 109 or better

Visual Indicators ......................... Rx-A, Rx-B, SynA, SynB, Vcc, BRD-1, BRD-2, RSP-1,

.........................................RSP-2, MASTER, SLAVE, DTE, DCE, PWRA, PWRB, ALARM

Dry Contact Alarm......................................................................................... 12VDC, 1A

Power Source

(standard) ...............................................................................................12VDC@650mA

(optional) ................................................................................................24VDC@400mA

(optional) ................................................................................................48VDC@120mA

(optional) ....................................................... 115 or 230VAC with external power cube

Temperature

Operating (standard) ................................................................................. -10oC to 50oC

High Temp Version (optional) ................................................................... -20oC to 70oC

Storage....................................................................................................... -40oC to 90oC

Humidity........................................................................................ 95% non-condensing

Physical

Height ........................................................................................................ (18.2 cm) 7.2"

Width ........................................................................................................... (3.5 cm) 1.4"

Depth ........................................................................................................ (16.6 cm) 6.60"

Weight ................................................................................................... (525 gm) 1.5 lbs

*ST is a trademark of AT&T **Contact factory for Laser version

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TC2200R/S Bus

RJ-11 PLUG’s

DCE

Cable Assembly

Tx Data

Rx Data

6 7

Appendix A - DB25 to 2 RJ-11’s Adapter

Description

If using the optional DB25 to 2 RJ-11’s Adapter, refer to the diagrams below for proper installation and pin connections.

The DB25 to 2 RJ-11’s Adapter, separates the two independent RS-232 data channels on the DB25F. Channel 1 is made of pins (2, 3, and 7) while Channels 2 is made of pins (4, 5, and 7).

User's Manual

Rev. 2.2

TC2200

Pin Connections

DB25 MALE Connector

M O C

. M M O C C

ADAPTER’S

DB25 to RJ-11 ADAPTER

TCAD-25M-2-11

1 H C

2 H C

DB25 MALE Connector

RJ-11 to DB25 Connector

RJ-11 Cross-Over Cable

RJ-11

To TC1900

To RTU/PLC

DB25 MALE Connector

Channel 1

RxD

TxD

GND

Channel 2

CTS

RTS

GND

Figure 22. DB25 Cable Assembly and Virtual Pin Connections Diagrams

To TC1900

To RTU/PLC

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TC1900

RxD TxD GND

Ground

RJ-11 JACK pin assignment

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TC2200R/S Bus

Appendix B - Warranty

Return Policy

To return a product, you must first obtain a Return Material Authorization number from the Customer Service Department. If the product’s warranty has expired, you will need to provide a purchase order to authorize the repair. When returning a product for a suspected failure, please provide a description of the problem and any results of diagnostic tests that have been conducted.

Warranty

Damages by lightning or power surges are not covered under this warranty.

All products manufactured by TC Communications, Inc. come with a five year (beginning 1-1-02) warranty. TC Communications, Inc. warrants to the Buyer that all goods sold will perform in accordance with the applicable data sheets, drawings or written specifications. It also warrants that, at the time of sale, the goods will be free from defects in material or workmanship. This warranty shall apply for a period of five years from the date of shipment, unless goods have been subject to misuse, neglect, altered or destroyed serial number labels, accidents (damages caused in whole or in part to accident, lightning, power surge, floods, fires, earthquakes, natural disasters, or Acts of God.), improper installation or maintenance, or alteration or repair by anyone other than Seller or its authorized representative.

User's Manual

Rev. 2.2

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. Buyer shall bear the risk of loss until all goods authorized to be returned are delivered to TC Communications, Inc. TC Communications, Inc. shall not be liable for any inspection, packing or labor costs in connection with the return of goods.

In the event that TC Communications, Inc. breaches its obligation of warranty, the sole and exclusive remedy of the Buyer is limited to replacement, repair or credit of the purchase price, at TC Communications, Inc.’s option.

To return a product, you must first obtain a Return Material Authorization (RMA) number and RMA form from the Customer Service Department. If the product’s warranty has expired, you will need to provide a purchase order to authorize the repair. When returning a product for a suspected failure, please fill out RMA form provided with a description of the problem(s) and any results of diagnostic tests that have been conducted. The shipping expense to TC Communications should be prepaid. The product should be properly packaged and insured. After the product is repaired, TC Communications will ship the product back to the shipper at TC's cost to U.S. domestic destinations. (Foreign customers are responsible for all shipping costs, duties and taxes [both ways]. We will reject any packages with airway bill indicating TC communications is responsible for Duties and Taxes. To avoid Customs Duties and Taxes, please include proper documents indicating the product(s) are returned for repair/retest).

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TC Communications TC2200R, TC2200S, TC2201R, TC2201S User Manual

Specifications and Main Features

Frequently Asked Questions

User Manual