Checkline J-CC User Manual

J-CC Data Cable

Operating Instructions

User's manual for OPTO-RS cable connections

General

The OPTO-RS cable enables a direct connection with most of the Käfer measuring instruments to a personal
computer, a dedicated printer or to a Käfer 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.
The simplex cable can be directly connected to any standard program as "HyperTerminal" provided with
Windows.

Connections

Line definition Name Sub-D 9 pin Cable color Line status

Positive power supply : RTS 7 white ON (HIGH)
Negative power supply TXD 3 brown OFF (LOW)
Data (instrument to periphery) RXD 2 yellow INPUT
Data request: Standard status Data
request

Duplex cable

The duplex cable allows a 2-way communication between an instrument and a PC in half-duplex mode (e.g. 2­way communication but not simultanuously).
Important : Only Duplex instruments have the ability to receive RS232 commands. If you use a Duplex cable
with a simplex instrument, all commands other than "?" will be seen as a data request.
The pin assignment of a duplex cable is different to the one of a simplex cable.

DTR 4 green

ON (HIGH) OFF (LOW) during
min. 110m sec.

Connections

Line definition Name Sub-D 9 pin Cable color Line status

Positive power supply : DTR 4 white ON (HIGH)
Negative power supply RTS 7 brown OFF (LOW)
Data (instrument to periphery) RXD 2 yellow INPUT
Data request: TXD 3 green "?" + <CR>

Note :

In case of data sending from the instrument, the hold mode will be active. To disable the Hold
mode simply do a new data request.

Remote commands

Format

[¦ C1-Cn ¦ { S1-Sn } ¦ CR ]

C1-Cn: command of 2 to 3 characters
S1-Sn: 0/1 : command disabled/activated

?

: status request

+XXX.YYY: entering numerical values