Dataprobe 8PK-SCS - Manual (Page 8)

Model 8PK-SCS Page 8
MANUAL CONTROL OF PORTS
The manual push-button switch on the front panel can be used for local control of the 8PK-SCS. Each
time the button is depressed, the port will cycle to the next port. To return the 8PK-SCS to automatic
operation, depress the push-button switch for over two seconds; all Port LEDs will turn off.
The Timeout feature, if enabled continues to operate when Manual control is established. To override
this feature, select Timeout = 0 from the Programming menu.
When manual control is selected, lead control is locked out. Escape codes will override the manual
selection only in Terminal Mode
INSTALLATION
Master and Switched Ports
Connection to the Switched A-H ports is made
using 25 pin D Subminiature connectors on the
rear of the unit. The following leads are supported
for Asynchronous communications:
Pin# Designation
2 Transmit Data
3 Receive Data
4 Request to Send
5 Clear to Send
6 Data Set Ready
7 Signal Ground
8 Data Carrier Detect
20 Data Terminal Ready
The eight switched ports A-H are wired DCE (output data on pin 3,RD). The Master port is wired for as
DTE. To directly connect a terminal device to the Master Port, a Null cable is required. Refer to Figure 3.
Typical
Port A-H
RTS
Mon. Switch
Control Code
Mon.
Electronic
4 Way
Switch
2 TD
3 RD
4 RTS
5 CTS
6 DSR
8 DCD
DTR 20
7 SG
2 TD
3 RD
4 RTS
5 CTS
6 DSR
8 DCD
DTR 20
7 SG
Master
Port
Figure 2
System Diagram
2
3
4
5
6
7
8
20
Null Connection to Terminal
Control Leads Reqired vary from device to
device. Consult your operations manual for
details on your specific needs.
2
3
4
5
6
7
8
20
8PK-SCS
Master Port
FIGURE 3
Null Modem Connection