Operating Instructions PA-xxP
961-00035 rev11
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10
Control Connections
Amada Weld Tech recommend the use of screened cables for all connections.
10.1
RS232 Port (9way D Type)
A PC uses either a 9-pin D-type serial connector or a 25-pin D-type. The table below shows how to
interface the PAxxP to either type of PC serial communication port. (Handshake lines CTS,RTS,
DSR & DTR can usually be omitted)
Comms signal
description
25-pin
comms port
9-pin PC
comms port
Connection
required
9-pin D-sub
connector on PAxxP
Protective ground
pin 1
pin 5
Tx
pin 2
pin 3
pin 3 (Rx)
Rx
pin 3
pin 2
Pin 2 (Tx)
RTS
pin 4
pin 7
CTS
pin 5
pin 8
DSR
pin 6
pin 6
Logical Ground
pin 7
pin 5
pin 5 (isolated 0V)
DTR
pin 20
pin 4
10.2
MWSBus
This connection is no implemented on these machines.
10.3
USB Port
This port connects directly to the HMI. It can be used for reprogramming. It is a USB type A connector,
and conforms to the USB 1.1 standard. We currently do not recommend use of memory sticks greater
than 1 Gigabyte.
The 9 Way D type connector provides an
optically isolated RS232 communications
port.
Connections are as follows;
TXD
pin 2
RXD
pin 3
0V
pin 5
Isolation is rated at 500V continuously, or
1000V for 1 second.
Full duplex 9600, 38400 & 57600 baud
Connecting a typical PC to the PAxxP