1536 St. Clair Road, Taylorsville, NC 28681, USA - Voice: (828) 635-7189 - Fax: (828) 635-5319 - E-mail: dsi@caro.net

Modbus TCP / Modbus Plus  (MBT)

OPC Server Data Sheet

	Last Updated: 3/3/2003
Devices Supported:	Modicon Quantuam, Premium, Atrium, and Momentum PLCs. Also communicates with any device that uses standard Modbus/TCP or Modbus Plus Protocol.
Performance:	Performance data provided on request. Please email dsi@caro.net. MBT will out-perform all Modbus Ethernet servers on the market.
OPC Compliance:	OPC 2.04 and OPC 1.0a Data Access
Platform:	Windows NT4.0 / 2000 / XP
Interface Type:	Modbus Ethernet and Modbus Plus in one OPC Server
Protocol:	Modbus/Ethernet, Modbus Plus
Modbus Addressing:	4, 5, or 6 digits (Modbus Ethernet and Modbus Plus)
Data Types:	ASCII, Signed Integer, Unsigned Integer, Float, Digital, Time, Long, Signed Long
Contact:	Dimension Software, Inc. - 1536 St. Clair Road, Taylorsville, NC 28681, USA - Voice: (828) 635-7189, Fax: (828) 625-5319, E-Mail: dsi@caro.net Web: http://www.caro.net/dsi.

General Features

1	A user interface called the PowerTool for configuring channels, devices, and datablocks. Statistical communications data is provided for throughput analysis at each level.
2	The PowerTool has a built-in datascope for checking Host-to-RTU and RTU-to-Host communications messages. The PowerTool also has context sensitive help.
3	Direct, Radio, and Telephone communication modes.
4	Automatic reads after a write to confirm a write.
5	Automation Interface - You don't have to use the Power Tool to configure the driver. You can make your own COM or OLE application (using Microsoft's Visual Basic) to configure the driver and access data.
6	Secondary Poll Rate - The OPC Server polls a datablock at the secondary poll rate once the Access Time expires. Data is polled at the secondary poll rate until there is another client request for data. If the secondary poll rate is set for a longer period of time than the Primary Rate, CPU resources are reduced while ensuring that the datablock will always be polled.
7	Phased Poll Rates
8	Enable/Disable individual communication channels, devices, and datablocks from the automation interface or your HMI.

Modbus Ethernet Features

1	Supports redundant Modbus Ethernet networks.
2	Supports multiple simultaneous connections to the same device.
3	Supports redundant devices (devices can have the same IP address, port, and unit ID).

Modbus Plus Features

1	Supports redundant Modbus Plus networks.
2	Supports use of multiple master paths.
3	Supports redundant devices (devices can have the same routing path).
4	Supports global data, including writing to local node global data.

Function Codes Supported (Modbus Ethernet and Modbus Plus)

Memory Type:	Function Code:	Command Name:	Data Type Supported:
Coil	1	Read Coil	Bool Only
	5	Write Coil	Bool Only
	15	Force Multiple Coils	Bool Only
Holding Register	3	Read Multiple Registers	All
	6	Write Single Register	All
	16	Write Multiple Registers	All
Input Discrete / Status	2	Read Input Discrete	Bool Only
Input Register	4	Read Input Registers	All
Exception Status	7	Read Exception Status	Bool Only
Extended Register	20	Read General Reference	All
	21	Write General Reference	All
FIFO	24	Read FIFO	All

Addresses Ranges (Modbus Ethernet and Modbus Plus)

Memory Type:	Type:	Read/Write:	Address Type:	Address Range:	Maximum Length:
Coil	Digital	R/W	4 Digit	1 - 999	800
			5 Digit	1 - 9999
			6 Digit	1 - 65536
Holding Register	Analog	R/W	4 Digit	4001 - 4999	125
			5 Digit	40001 - 49999
			6 Digit	400001 - 465536
Input Discrete	Digital	R	4 Digit	1001 - 1999	800
			5 Digit	10001 - 19999
			6 Digit	100001 - 165536
Input Register			4 Digit	3001 - 3999	125
			5 Digit	30001 - 39999
			6 Digit	300001 - 365536
Exception Status	Digital	R	Any	EX:1 - EX:8	8
Extended Register	Analog	R/W	4 Digit	6000:1 - 6999:10	125
			5 Digit	60000:1 - 69999:10
			6 Digit	600000:1 - 665535:10
FIFO	Analog	R	4 Digit	FF:1 - FF:999	32
			5 Digit	FF:1 - FF:9999
			6 Digit	FF:1 - FF:65536

Signal Conditioning:

Signal Conditioning Name:	Description:
NONE	No Scaling
LIN (Unsigned)	Scales 16-bit unsigned values to the database block's EGU range.
LIN (Signed)	Scales 16-bit signed values to the database block's EGU range.
3BCD	Scales 3-digit Binary Coded Decimal values to the database block's EGU range.
4BCD	Scales 4-digit Binary Coded Decimal values to the database block's EGU range.
8BN	Scales 8-bit binary values to the database block's EGU range. Ignores the most significant byte. No Alarming on Out of Range.
8AL	Scales 8-bit binary values to the database block's EGU range. Ignores the most significant byte. Alarming on Out of Range.
12BN	Scales 12-bit binary values to the database block's EGU range. Ignores the most significant nibble (4-bits). No Alarming on Out of Range.
12AL	Scales 12-bit binary values to the database block's EGU range. Ignores the most significant nibble (4-bits). Alarming on Out of Range.
13BN	Scales 13-bit binary values to the database block's EGU range. Ignores the most significant 3 bits. No Alarming on Out of Range.
13AL	Scales 13-bit binary values to the database block's EGU range. Ignores the most significant 3 bits. Alarming on Out of Range.
15BN	Scales 15-bit binary values to the database block's EGU range. Ignores the most significant bit. No Alarming on Out of Range.
15AL	Scales 15-bit binary values to the database block's EGU range. Ignores the most significant bit. Alarming on Out of Range.

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