INSTALLATION
9
2
RS232 Interface
The main serial interface is used for communication with the Host computer and allows both
transmission of code data and controller configuration. The connections to the Host can be
made as follows:
through the PWO (in which case a CAB-SC6103 cable connects the PWO to the
SC6000)
directly to the SC6000
See also par. 2.5.1.
It is always advisable to use shielded cables. The overall maximum cable length must be
less than 15 m (49.2 ft).
The following pins of the 9-pin connector are used for RS232 interface connection:
Pin
Name
Function
2
TX
Transmit
3
RX
Receive
5
GND_ISO
Main signal ground
7
CTS
Clear to send
8
RTS
Request to send
The RTS and CTS signals control data transmission and synchronize the connected devices.
If the RTS/CTS hardware protocol is enabled, the SC6000 activates the RTS output to
indicate a message can be transmitted. The Host must activate the CTS input to enable the
transmission.
SC6000
8
RTS
RTS
PWO
GND-ISO
5
CTS
7
RX
3
RX
TX
2
TX
Shield
Host
Signal Ground
CTS
CAB-SC6103
Figure 9 - RS232 Connections: Host - PWO- SC6000
SC6000
8
RTS
RTS
GND-ISO
5
CTS
7
RX
3
RX
TX
2
TX
Shield
Host
Signal Ground
CTS
Figure 10 - RS232 Connections: Host - SC6000
