Instruction manual
ITEM TE550
S.p.A.
78/92
CHAPTER 13 -
OPTIONS
13.1 -
RS-232 SERIAL INTERFACE
The RS-232 serial expansion card, code 50214, permits the user to connect the TE550 to a
printer or a personal computer which must be fitted with a RS232 serial interface card, to
document production data. The card 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, i.e. 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 user to choose whether or not
to activate the print. The following data is printed for each weld:
Number of the weld program
Number of the cycles with which the weld was carried out
Welding current
Welding current conduction angle
Weld spot progressive number
Measured energy value (only in WORKING MODE = ENE)
Spot out-of-limit warning
Thickness of the intervening material (optional)
Penetration of the electrodes within the intervening material (optional)
Pressure exerted by the cylinder after the squeeze phase (optional)