GE X3.28 manual Protocol X DCA

Models: X3.28

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Protocol X DCA

GE Energy Services

 

 

 

 

Configuration Guide

 

 

 

 

 

 

 

 

 

Name

 

Range

 

 

Description

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

A typical value is 8.

 

 

 

 

 

 

 

 

 

Stop Bits

 

1 or 2

 

 

This parameter specifies the number of framing bits used at the end

 

 

 

 

 

 

 

of the data bits.

 

 

 

 

 

 

 

A typical value is 1.

 

 

 

 

 

 

 

 

 

 

Parity

 

None

 

 

This parameter specifies the type of parity error checking used on

 

 

 

 

Odd

 

 

the communication port.

 

 

 

 

Even

 

 

A typical value is None.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

RTS Enable

 

Enable

 

 

This parameter specifies whether or not to enable the use of the

 

 

 

 

Disable

 

 

Request to Send (RTS) control line.

 

 

 

 

 

 

 

 

 

 

CTS Enable

 

Enable

 

 

This parameter specifies whether or not to enable the use of the

 

 

 

 

Disable

 

 

Clear to Send (CTS) control line.

 

 

 

 

 

 

 

 

 

 

DCD Enable

 

Enable

 

 

This parameter specifies whether or not to enable the use of the Data

 

 

 

 

Disable

 

 

Carrier Detect (DCD) control line.

 

 

 

 

 

 

 

 

Rx Message

50 .. 2147483647

 

This parameter defines the total message timeout in milliseconds.

 

 

Timeout

 

 

 

 

Received messages must be completed in this time frame to be

 

 

 

 

 

 

 

considered valid responses. Message timeout is measured from the

 

 

 

 

 

 

 

end of command transmission to the end of the response. Refer to

 

 

 

 

 

 

 

Table 4 Character Times. A typical value would be 500 character

 

 

 

 

 

 

 

times.

 

 

 

 

 

 

 

 

Inter Char

0 .. 2147483647

 

This parameter specifies the maximum time, in milliseconds, that

 

 

Timeout

 

 

 

 

may expire between received characters. If this time expires, the

 

 

 

 

 

 

 

message is considered to be finished. Refer to Table 4 Character

 

 

 

 

 

 

 

Times. A typical value would be 3 character times.

 

 

 

 

 

 

 

 

RTS On Time

0 .. 2147483647

 

This parameter defines the number of milliseconds to hold RTS on

 

 

 

 

 

 

 

before beginning transmission. If a modem is not used, this

 

 

 

 

 

 

 

parameter is ignored. A typical RTS On value would be 15 ms.

 

 

 

 

 

 

 

 

RTS Off Time

0 .. 2147483647

 

This parameter defines the number of milliseconds to hold RTS on

 

 

 

 

 

 

 

after completion of data transmission. If a modem is not used, this

 

 

 

 

 

 

 

parameter is ignored. Refer to Table 4 for Character Times.

 

 

 

 

 

 

 

Typically RTS Off Times are set to 3 character times.

 

 

 

 

 

 

 

 

DCD Wait Time

0 .. 2147483647

 

This parameter defines the number of milliseconds that DCD must

 

 

 

 

 

 

 

be asserted before data will be accepted by the DCA. If a modem is

 

 

 

 

 

 

 

not used, this parameter is ignored. A typical DCD Wait time is 0.

 

 

 

 

 

 

 

 

 

VC Param.

Indexes A197_VC or

 

 

This is an offset into A197_VC (Virtual Connection Table) and is

 

 

 

 

Not Used (-1)

 

 

used for choosing the required virtual connection parameters for this

 

 

 

 

 

 

 

port. If ‘Not Used’ is selected, Virtual Connection will not be

 

 

 

 

 

 

 

available for this port.

 

 

 

 

 

 

 

 

 

Duplex Mode

Half-Duplex

 

 

This parameter specifies the communication mode. When the SRU

 

 

 

 

Full-Duplex

 

 

is configured for Full-Duplex mode, the DCA will expect

 

 

 

 

 

 

unsolicited messages from the SRU device and will disable THE

 

 

 

 

 

 

 

 

 

 

 

 

 

 

polling sequence. In this mode, only one SRU is allowed for this

 

 

 

 

 

 

 

port, thus the Number of SRUs parameter should be set to 1.

 

 

 

 

 

 

 

When the SRU is configured for Half-Duplex mode, the polling

 

 

 

 

 

 

 

sequence is enabled and the DCA expects no unsolicited messages.

 

 

 

 

 

 

 

Multiple SRUs are allowed in this mode.

 

 

 

 

 

 

 

This parameter also determines the message format used when

 

 

 

 

 

 

 

transmitting a message.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

A197-0CG-1.00-2Restricted

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GE X3.28 manual Protocol X DCA

X3.28 specifications

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