GE X3.28 manual Protocol X DCA

Page 16

 

 

 

 

 

 

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

6

Full

 

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Contents Configuration Guide Allen-Bradley Ansi X3.28 DCATrademark Notices Table of Contents Configuring WIN for the Ansi X3.28 DCA Appendix a Messages Logged by the Ansi X3.28 DCAList of Figures System OverviewList of Tables About this Guide About this GuideWho should use this Guide Additional Documentation Overview Product PerspectiveSystem Overview Configuring Tables Ansi X3.28 DCA Configuration TablesAnsi X3.28 DCA Configuration Tables Table Name DescriptionConfiguration Sequence Main Application Configuration Table Parameters Configuring the Main Application Table A197MAINName Range Description Protocol X DCA Configuring Communication Port Table A197COM Communication Port Configuration Table ParametersProtocol X DCA Character Times Baud Rate One Character Time msProtocol X DCA Configuring the SRU Table A197SRU SRU Configuration Table ParametersProtocol X DCA Configuring the Partition Definition Table A197PAR Partition Definition Table ParametersType Start Address word address Num. Words Word Address System Parameter UnitConfiguring System Parameters Table A197SYS System Parameters Table ParametersAddress System Parameter Unit Value Default Coupler for Allen-Bradley Data Highway System ParametersConfiguring the Virtual Connection Table A197VC Virtual Connection Configuration Table Parameters Field Range DescriptionConfiguring WIN for the Ansi X3.28 DCA Wesdac Point AllocationProtocol X DCA Appendix a Messages Logged by the Ansi X3.28 DCA A197Fatal Error Messages F004 COM rec x, Interchar Timeout must be less than Rx TimeF001 Unable to locate table tablename F002 A197SRU rec x, duplicate SRU address yF005 A197PAR rec x and y, Partitions overlap F006 A197COM rec x, Only one SRU allowed in Full-DuplexF100 Future expansion points not Nullptr F101 Unable to find table tablenameF102 Unable to open a channel to WIN F103 Unable to create an exchange, name, status=yF104 Unable to spawn process, processname F105 Not enough memoryF107 Unable to get pointer table name F108 Not enoughx points, y requiredWesdac Point Types F109 User data memory overflowF200 Unable to get pointer to COM config record = F201 Unable to create exchange, exchage, status=xF202 Unable to spawn process F203 L062COMEXTENSIONS should be initializedNon-Fatal Error Messages E101 Restart failed for processnameE102 Not enough memory E110 Unable to open comport, status =E111 comport unable to set parameters, status = E112 comport unable to set timers, status =E201 Com initialization failed, status = comport E202 Not enough memory E205 Encountered error = x while closing comportE204 a child process has died, suspending Information Messages I101 Unable to find table A197MAIN, deletingControl Request Return Codes

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