Rockwell-automation 57C620 AutoMax Programming Executive Version 3.8 Instrukcja Użytkownika Pobierz pdf (Strona 230)

AĆ2 AutoMax Programming Executive Version 3.x

Programming Terminal End

9ĆPin Female Connector

SIGNAL PIN#

RECV ă2

XMIT ă3

CTS ă8

RTS ă7

DTR ă4

DSR ă6

COM ă5

Reliance End

25ĆPin Male Connector

PIN# SIGNAL

ă2 XMIT

ă3 RECV

ă4 RTS

ă5 CTS

ă6 DSR

20 DTR

ă7 COM

Figure 2



All Processor module ports except for the port PROGRAMMER/PORT B" on the

leftmost Processor in the rack are available to the user to connect to an external

device. In order for the application software to be able to use a serial port, you

must

first use the OPEN statement in a BASIC task. Refer to the Enhanced BASIC

Language Instruction Manual (JĆ3675) for more information. Note that on

AutoMax Processor modules, you can OPEN PORTA" or OPEN PORTB". The

following is a description of the pins on ports available to the user.

Pin# Function

2 Output. This signal contains transmitted data.

3 Input. This signal contains received data.

4 Output. This signal indicates transmitter status and is true whenever the

transmitter is sending characters. The signal is typically used to enable

external device, e.g.,a modem. The signal is meaningful only if hardware

handshaking has been enabled.

5 Input. This signal enables the transmitter. It must be true in order for the

transmitter to send a character. The signal is typically used for hardware

flow control. This input is ignored if hardware handshaking has not been

enabled.

6 Input. This signal enables the receiver. It must be true in order for the

receiver

to accept characters. If this signal becomes false while a message

is being received, any characters being received will be deleted and an

error will be reported to the application software. This input is ignored to

the application software. This input is ignored if hardware handshaking

has not been enabled.

7 Signal ground.

20 Output. This signal indicates receive status. The signal is true whenever

the receiver will accept characters. It is typically used for hardware flow

control. The signal is meaningful only if hardware handshaking has been

enabled.

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