Raypak B6000 Installation Manual

CAT ALOG NO.: 5000.60 B Effective: 4-09-08 Replaces: 3-15-99

T-2

Raypak B6000 Metasys™ N2

System Protocol Interface

T-2 Communications Interface

Raypak B6000 Boiler Controller

to Johnson Controls Metasys N2 Interface Card

Installation and Operating Manual

P/N 240717 Rev. 3

TABLE OF CONTENTS

1.0 Product Specifications.........................................................................................................................3

2.0 Metasys Slave Port Functionality ......................................................................................................... 4

2.1 N2 Slave Communications .......................................................................................................4

2.1.1 Command/Replay Cycle .......................................................................................................4

2.1.2 N2 System Protocol Comands ..............................................................................................4

2.1.3 Command Error Checking ....................................................................................................5

2.1.4 Data Integrity ..........................................................................................................................5

2.2 N2 Point Layout ..................................................................................................................................5

3.0 Hardware Setup ................................................................................................................................... 6

3.1 1500 Interface Card Setup ........................................................................................................6

3.1.1 Connecting Power to the T-2 Card ........................................................................................6

3.1.2 Dip Switch Configuration .......................................................................................................6

3.1.3 1500 Jumper Configurations ................................................................................................7

3.2 B6000 Communications ....................................................................................................................7

4.0 N2 System Protocol Support ..............................................................................................................8

4.1 Attribute Commands .................................................................................................................8

4.1.1 Analog Input ...........................................................................................................................8

4.1.2 Binary Input ............................................................................................................................8

4.1.3 Analog Output.........................................................................................................................8

4.1.4 Binary Output .........................................................................................................................8

4.2 Controls Commands ..........................................................................................................................8

4.3 Device Identifier Code .........................................................................................................................8

5.0 Diagnostics ......................................................................................................................................... 9

5.1 LED Indicatiors .........................................................................................................................9

T-2 (Raypak B6000 Metasys N2 System Protocol Interface .....................................................................16

T-2 Installation and Mounting ....................................................................................................................17

Wiring 1500 - RPK .....................................................................................................................................18

B6000 System Control Board ....................................................................................................................19

Wiring: B6000 System Control To Gateway Cable ....................................................................................20

Check Your Power Source........................................................................................................................20

APPENDICES

Appendix A

Metasys Point Mapping

Appendix B

Communication cable connection diagrams

NOTE: Minimum 18 A WG , 105°C, stranded wire must be used for all low voltage (less than 30 volts) external connections to the unit. Solid conductors should not be used because they can cause excessive tension on contact points. Install conduit as appropriate. All high voltage wires must be the same size (105°C, stranded wire) as the ones on the unit or larger.

1. Product Specifications

The Raypak Gateway card is a hardware product designed to be a communications front end for the Raypak B6000 Boiler Control and Johnson Controls N2 compatible masters.

The product includes the following functionality:

Metasys N2 Slave Interface

· Binary Input, Binary Output, Analog Input and Analog Output data type commands

supported for primary control/monitoring of the B6000 operating parameters

· Supported Command/Subcommands: 0/4 : Poll Message No Acknowledge 0/5 : Poll Message with Acknowledge 0/9 : Status Update 1/1 : Read Analog Input Attributes 1/2 : Read Binary Input Attributes 1/3 : Read Analog Output Attributes 1/4 : Read Binary Output Attributes 2/1 : Write Analog Input Attributes 2/2 : Write Binary Input Attributes 2/3 : Write Analog Output Attributes 2/4 : Write Binary Output Attributes

7/2/3 : Override Analog Output 7/2/4 : Override Binary Output

F : Identify Device Type

The following commands are recognized, and acknowledged, but do not have impact on the operation of the Gateway, and do not return any data:

0/0 : Time Update 0/8 : Warm Start

All other commands return a Bad Command Error Code

• Warning and Alarming functions preform on Analog Input and Binary Input data types

• Change of State Reponse buffering

Raypak B6000 Interface

• RS-485 electrical interface (as well as RS-232 and RS-422)

• Emulates Raypak Modem address and functionality

General Specifications

· Configuration via dip switches

Slave Address, Baud and Parity

Hardware Specifications

· 4"x5" form factor

· Two male 9-pin D shell connectors

· Slave communications port configurable for RS-232C or RS-422/485

· Communication status - Active and Fault for each port

· 9 to 30 VDC external power

2.0 Metasys Slave Port Functionality

2.1 N2 Slave Communications

The Comminications Interface card supports the Johnson Controls Metasys™ N2 Protocol, as a slave, on port 1. This capability allows the module to communicate data from the Raypak B6000 Boiler Control to a Johnson Controls Metasys Master such as the Johnson Controls Companion™ or Metasys software.

The following discusses the functional capabilities of the card.

2.1.1 Command/Reply Cycle

Successful communications between a Slave and a Master will always consist of the following two transactions:

Command: Message from master giving instruction to slave. Reply: Response to command. A slave station will respond to a master issued command in several ways. Data Message: If the command was executed by the Slave, the response message will include the

data requested, or an acknowledgment that the command was executed. Error Message: If the command could not be executed by the Slave, for whatever reason, an error

response message is transmitted to the master. The error response message contains an error code indicating the cause of the error.

No Reply:If the master does not detect a reply within its time-out period, the master should retransmit the command, before a time out error is issued. If the Slave could not decode the message or an error occurred preventing the Slave from recognizing the message, no response will be issued.

2.1.2 N2 System Protocol Commands

The T-2 supports the commands and the data types necessary to enable control of the B6000 Controller from an N2 master. The data types and the commands, as well as the associated addressable points are overviewed below.

Data Types The N2 System protocol treats data as objects, with each data type having a different structure and purpose. The data types recognized by the T-2 card are as follows:

· Binary Input (BI)

· Binary Output (BO)

· Analog Input (AI)

· Analog Output (AO)

Reading Attributes

The data objects contain attributes which describe several data points, and some of its functionality. The contents of these attributes, including object configuration, status, current value, and alarm/warning limits, can be accessed with the following commands:

1/1 Read Analog Input Attributes 1/2 Read Binary Input Attributes 1/3 Read Analog Output Attributes 1/4 Read Binary Output Attributes

Writing Attributes

The data object attributes can be configured by a master using the following commands:

2/1 Write Analog Input Attributes 2/2 Write Binary Input Attributes 2/3 Write Analog Output Attributes 2/4 Write Binary Output Attributes

Controlling the B6000 Controller

Access to the control functions is made available through the Override commands. The following commands allow the B6000 to be controlled:

7/2/3 Override Analog Output 7/2/4 Override Binary Output

Status Update

The host can issue a ‘Status Update’ command to the T-2. The response will contain device information (“1500-N2 Rev 1.0A”) as well as current status information.

0/9 Status Update

Identify Device

When a master host first powers up, the ‘Identify Device’ command is issued to all of the Slaves. In the case of the T-2 card, the Device Code 10 Hex is returned to the host. When the Gateway first powers up, it will return and error code 0 in response to all commands from the host, indicating to the host that a power up condition has occurred. The host will respond with the “Identify Device’ command, telling the Communications Interface that the host has detected the power condition. The command code is:

2.1.3 Command Error Checking

When the Slave cannot execute a command, an error code is generated and returned to the Master. Error codes generated at the Slave will usually be indicative of an illegal function, an illegal address, or bad data.

2.1.4 Data Integrity

As in all good protocols, there must exist a level of data integrity checking to verify, with some degree of assurance, the quality of the transmitted data. The N2 System protocol supports a summation/modulus type of error checking on the address and data content of the communication packet.

2.2 N2 Point Layout

A relationship between the N2 Point Address and the B6000 parameters has been set up to ease control and monitoring of the unit. The relationship, by data object type, is shown in detail in Appendix A.

F Identify Device

3.0

Hardware Setup

3. 1 1500 Interface Card Setup

3.1.1 Connecting Power to the T-2 Card

The T-2 Card requires an external source of DC voltage. The DC source voltage should be between 9V and 30V. The power is connected to TB1, located near the two 9 pin serial port connections.

The connection to TB1 is as follows:

TB1-1 9-30 VDC (+) TB1-2 Common (-)

3.1.2 Dip Switch Configuration

The T-2 card is configured primarily through two sets of dip switches. These switches are read initially on power up only. The function of the dip switches is as follows (a value of one (1) is registered when the switch is in the ON position):

SW 1

12345678

• •••••

F F

••

↓

* Factory Settings

9600, No Parity, Address Bit 1

OFF Position: OFF Position:

ON Position: ON Position:

SW1 : Metasys Port Configuration

Switch Position Function Positions

1 Baud Rate 3 2 1 2 Selection 000300 3 001600

4 Parity 5 4 5 Selection 0 0 None

SW 2

12345678

• ••••••

F F

•

↓

0 1 0 1200 0 1 1 2400 1 0 0 4800 1019600 1 1 0 19200 1 1 1 19200

0 1 Odd 1 0 Even 1 1 Invalid

- *

6 Not Used 7 8

SW2 : Metasys N2 Slave Address Configuration

Switch Position Function Positions

1 Baud Rate 1 Address Bit 0 Value = 1 2 Address 2 Address Bit 1 Value = 2 3 Select 3 Address Bit 2 Value = 4 4 4 Address Bit 3 Value = 8 5 5 Address Bit 4 Value = 16 6 6 Address Bit 5 Value = 32 7 7 Address Bit 6 Value = 64 8 8 Address Bit 7 Value = 128

- *

The parameters are defined as follows: Baud Rate: The baud rate at which the module is to operate.

The baud rate is configured as follows:

Value Baud Rate

0 300 Baud 1 600 Baud 2 1200 Baud 3 2400 Baud 4 4800 Baud 5 9600 Baud* 6 19200 Baud

If a value outside of this range is selected,upon firing the power up process the card’s LEDs will flash on 1/2 second intervals until a correct address is selected. Powering down is not necessary.

Parity: The parity mode to be used by the module is defined by this word as follows:

0 No parity 1 Odd parity 2 Even parity

Metasys N2 Slave Address: Each of the separate drops off of a Johnson Controls Metasys Host must have a different Slave address. The Slave address is selected by encoding the Slave address in a binary

form using the dip switches.

3.1.3 1500 Jumper Configurations

The 1500 Interface card has five sets of jumpers on the board. Generally, the default jumper positions will be adequate for most applications, with JP4 and JP5 being the only jumpers that should ever need to be reviewed. For completeness, we provide the following discussion on all of the jumper locations:

JP Discussion

1 Hardware Reset (Not used) 2 Isolated Port 2 Power

1-2 Non-Isolated (Default) 2-3 Isolated (Should not be used)

3 Isolated Port 2 Ground

1-2 Non-Isolated (Default) 2-3 Isolated (Should not be used)

4 Metasys Port (P1) Termination Resistor

1-2 Connect 120 Ohms across Rec lines 2-3 Disconnect 120 Ohms (Default)

5 Metasys Port (P1) RS-232 or RS-422/485 Select

1-2 RS-232 Select (Should not be used) 2-3 RS-422/485 Select (Default)

3.2 B6000 Communications

The B6000 Communications Interface has been hard coded to operate at the following default conditions:

Baud 9600 Parity Odd

Stop Bits 1

The 1500 Interface card emulates the modem card that is normally connected to the B6000.

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