Instruction Manual
ITEM TE700
TECNA
S.p.A.
114/128
CHAPTER 11
– OPTIONS
11.1
- RS-232 SERIAL INTERFACE
The RS-232 serial expansion board, code 50214, permits the operator to connect the TE700
to a printer or a personal computer which must be fitted with a RS232 serial interface board,
to document production data. The board interfaces with the control unit through a 6-pin
connector and with the printer (or computer) through a standard female 9-pin connector. The
9-pin connector is wired as follows:
PIN 2
TRANSMISSION (TD)
PIN 3
RECEPTION (RD)
PIN 4
DTR (ALWAYS ON)
PIN 5
MASS (SIGNAL GROUND)
PIN 6
DSR (ALWAYS ON)
PIN 7
RTS
PIN 8
CTS
For the connection with a 9-pin port of a PC, simply use a standard modem cable, that is to
say do not cross wires 2 and 3.
On connecting the control unit to a serial printer with a 25-pin connector, keep in mind that the
serial ports of the printers have the following pin configuration:
PIN1
GROUND (FRAME GROUND)
PIN2 TRANSMISSION
(TD)
PIN3 RECEPTION
(RD)
PIN 4
TRANSMISSION REQUEST (RTS)
PIN 5
READY TO SEND (CTS)
PIN 6
DATA READY (DSR)
PIN 7
MASS (SIGNAL GROUND)
PIN 20
TERMINAL READY (DTR)
The control unit does not perform any type of handshaking at the serial port. The printer's
serial port must be configured with the following values:
SPEED 9600
BAUD
WORD LENGTH
7 BIT
PARITY EVEN
STOP BIT
1
The control unit runs the transmission at the beginning of the OFF TIME. It is important to
point out that the time required to print data is approximately 20 ms and this time will be
added to the set OFF TIME.
A specific parameter, in the special functions menu, allows the operator to choose whether or
not to activate the print. The following data is printed for each weld:
Welding program number.
Tool or welding head which the weld spot was carried out with.
Duration of the welding in mS.
Welding current in KA.
Conduction percentage of the RO power semiconductors.
Energy supplied during the welding operation (only if the electrodes voltage gauge is
installed on the machine).