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Note: Driver defaults to 8 Databits, Even Parity, 1 Stop Bit

 

Note: Care must be made to use the right checksum mode on the instrument, see the addressing below, but also the Driver Command section later below.

 

Note, AutoDetect will assume 1 decimal place when detecting instruments.

 

Format is:

 A,D,C

 

Where:

D:        Precision of user defined items: 0 / 1 / 2 / 3

C:        Checksum mode (optional). Must be  ", C" if checksum is turned on, or absent if not enabled.

Checksum mode on corresponds to the "PSL" setting in the comms setup.  Setting PSL to 0 on the instrument (the default setting) means no checksum, and setting it to 1 enables the checksum.  See below for an except from the manual.

 

Examples:

1,2        Instrument 1, Two Decimal Places, No Checksum

2,0,C        Instrument 2, No Decimal Places, Checksum Mode on

 

Driver Command Support:

 

This driver supports the following driver commands:

TTL=x                Set Time To Live to x tenths of a second, Eg TTL=5 means half of a second.

CA=y                Set Checksum mode to on (y=1) or off (y=0)  e.g.  CA=1 turns on checksum mode for all instruments on this comms port.

TW=z                Set Write Timeout to z tenths of a second.

TRT=u                Set number of tenths of a sec for Automatic Read/Write Triggers to respond in, Default 40.  This causes writes to fail if the associated Read/Write trigger does not return to "0" before this time.

ED=v                Error Delay in tenths of a sec.  Sets time before driver issues retries in case of errors.

Also supported are the T and R commands for Timeout and Retry, see the Driver Command description for information.

 

Yokogawa Manual Excerpt: