Bowers Group Sylvac Opto Instruments - Manual (Page 13)

12
User's manual for OPTO-RS cable connections
General
The OPTO-RS cable enables a direct connection with most of the Sylvac measuring instruments to a personal
computer, a dedicated printer or to a Sylvac display unit.
It is not only a cable, but an interface which converts the data output of the instrument to a compatible RS232
signal. The periphery instrument connection must be able to supply power to the OPTO-RS plug.
Definition
RS232 communication parameters
4800 baudrate, even parity, 7 data bits, 2 stop bits
Data format
Data
[ Sign ¦ E1-En ¦ "." ¦ F1-Fn ¦ CR ]
Sign : « + », « - », or « space »
E1-En: integer
F1-Fn: fractional
n: depends on used unit and resolution
Errors
[ "ERR" ¦ Number ¦ CR ]
0: sensor error (e.g. speed, scale distance) 1: incorrect command
2: parity error (duplex instruments only) 3: exceeded measurement range
Identification
[ "SY" ¦ Instr. ¦ "." ¦ OPT1 ¦ {"." ¦ OPT2} ¦ CR ]
SY: Sylvac
Instr: 203, 235, 233, etc
OPT1: version option
OPT2: additional version options (according to instrument used)
Note: The id. transmission is done only when switching ON the instrument
Connection description
Two different types of OPTO-RS plug connections are available: Simplex and Duplex
Simplex cable
First generation of OPTO-RS cable connection, designed for instruments which were not able to receive RS232
commands. Data requests are made by LED status change (e.g. by turning off the DTR signal line for a
minimum of 110ms).
The OPTO-RS simplex cable can also be used with duplex instruments, however remote commands will be
ignored.
Phototransistor (data receipt)
LED for data request