Siemens SIMATIC VPU200-3104, Руководство по оборудованию

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Installation 4-14 SIMATIC VPU200–3104 Hardware Manual
Other Printers. The VPU200–3104 can be connected to any printer that
will accept the character format shown in Figure 4-12 and is compatible
with the printer port connector shown in Figure 4-7. Voltage levels at the
printer port are compatible with E.I.A. standard RS–232–C. VPU200
requirements for printing are pin 3 (RX Data), pin 7 (Signal GND), and pin
20 (Data terminal ready). Data terminal ready is used for printer busy.
–12 V
+ 12 V
1
0
D D D D D D D
+ 12 V –– “Space”: Control Signal
“On”: Data “0”
–12 V –– “Mark”: Control Signal
“Off”: Data “1”
The transmit line gives
“data” not “control”
Start Bit
Parity Bit
(Odd)
LSB MSB
7 Bit ASCII Character
One Stop Bit for
over 110 Baud
Two Stop Bits
for 110 Baud
Figure 4-12 Character Format
The SIMATIC 5TI port is not used with the SIMATIC 560/565
controller.
The CRU expansion port is reserved for future use.
5TI Port
CRU Expansion Port