Difference between revisions of "Scale Communication"
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| − | = Cable = | + | == Cable == |
RS-232 Serial Communication Ports | RS-232 Serial Communication Ports | ||
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{{:Adam Equipment CPWplus200 Configuration}} | {{:Adam Equipment CPWplus200 Configuration}} | ||
| − | = Testing communication = | + | == Testing communication == |
Terminal Emulation program like Minicom | Terminal Emulation program like Minicom | ||
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During initial testing, if trouble is encountered communicating with the scale, it may be useful to set the scale in trn 2 mode so that it continuously transmits data. | During initial testing, if trouble is encountered communicating with the scale, it may be useful to set the scale in trn 2 mode so that it continuously transmits data. | ||
| − | = Configuring the computer's serial port = | + | == Configuring the computer's serial port == |
To list the line parameters for ttyS0: | To list the line parameters for ttyS0: | ||
Revision as of 03:33, 14 January 2014
Contents
Cable
RS-232 Serial Communication Ports
Depending on whether the scale is wired for DTE or DCE, it may require a null modem cable or replacing and rewiring the serial connector.
Configuration
Set up the scale. 9600 baud, 8 bit, no parity
Adam Equipment CPWplus200
See Section Section 13 of the CPW200plus User Manual for detailed instructions.
With the scale off, hold the Tare/Zero button and press the On/Off button.
| Parameter | Setting | Rational |
|---|---|---|
| Auto Power Off | Pr oFF | Don't want the scale to turn off after a period of inactivity. |
| Backlight always off | bL 1 | Increases battery life when AC power fails. |
| Baudrate | 9600 | Default |
| 8 Bit no parity | PAr 1 | Default |
| Transmission Mode | trn 1 | Default. Can set to trn 2 during trouble shooting. |
Testing communication
Terminal Emulation program like Minicom
During initial testing, if trouble is encountered communicating with the scale, it may be useful to set the scale in trn 2 mode so that it continuously transmits data.
Configuring the computer's serial port
To list the line parameters for ttyS0: stty -F /dev/ttyS0 -a
Example:
# stty -F /dev/ttyS0 -a speed 9600 baud; rows 0; columns 0; line = 0; intr = ^C; quit = ^\; erase = ^?; kill = ^U; eof = ^D; eol = <undef>; eol2 = <undef>; swtch = <undef>; start = ^Q; stop = ^S; susp = ^Z; rprnt = ^R; werase = ^W; lnext = ^V; flush = ^O; min = 1; time = 0; -parenb -parodd cs8 hupcl -cstopb cread clocal -crtscts -ignbrk -brkint -ignpar -parmrk -inpck -istrip -inlcr -igncr icrnl ixon -ixoff -iuclc -ixany -imaxbel -iutf8 opost -olcuc -ocrnl onlcr -onocr -onlret -ofill -ofdel nl0 cr0 tab0 bs0 vt0 ff0 isig icanon iexten echo echoe echok -echonl -noflsh -xcase -tostop -echoprt echoctl echoke
stty can also be used to set the serial port parameters:
stty -F/dev/ttyS0 -hupcl ignbrk -icrnl -ixon -opost -onlcr -isig -icanon - iexten -echo -echoe -echok -echoctl -echoke igncr
