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HP Customer Support - Knowledge Base

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  • Information

    Dear Customer, HP remains committed to serve you even during the current pandemic situation by ensuring the continuity of our operations. Given the evolving Covid-19 situation in the country, you might experience some delay in delivering Onsite support to locations which are not accessible due to local Govt regulations. Thank You for your understanding and support.

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    Fix and resolve Windows 10 update issue on HP Computer or Printer. Click here

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HP Designjet Printers - Serial Cable Pin Outs

25 pin to 9 pin cable

Pin outs

Printer
PIN
PIN
Computer
Request to Send
4
---------
1
Received Line Signal Detect
Transmit Data
2
----------
2
Receive Data
Receive Data
3
----------
3
Transmit Data
Clear to Send
5
----------
4
Data Terminal Ready
Data Set Ready
6
----------
Signal Ground
7
----------
5
Signal Ground
Data Terminal Ready
20
----------
6
Data Set Ready
----------
8
Clear to Send
Data Carrier Detect
8
----------
7
Request To Send

25 pin to 25 pin cable

Pin outs

Printer
PIN
PIN
Computer
Protective Ground
1
----------
1
Protective Ground
Transmit Data
2
----------
3
Receive Data
Receive Data
3
----------
2
Transmit Data
Signal Ground
7
----------
7
Signal Ground
Clear to Send
5
----------
20
Data Terminal Ready
Data Set Ready
6
----------
Data Terminal Ready
20
----------
5
Data Set Ready
----------
6
Clear to Send

25 pin to 25 pin cable

Pin outs

Printer
PIN
PIN
Computer
Protective Ground
1
----------
1
Protective Ground
Transmit Data
2
----------
3
Receive Data
Receive Data
3
----------
2
Transmit Data
4
----------
8
Signal Ground
7
----------
7
Signal Ground
8
----------
4
12
----------
11
----------
19
11
----------
12
19
----------
Clear to Send
5
----------
20
Data Terminal Ready
Data Set Ready
6
----------
Data Terminal Ready
20
----------
5
Data Set Ready
----------
6
Clear to Send

25 pin to 25 pin cable

Pin outs

Printer
PIN
PIN
Computer
Protective Ground
1
----------
1
Protective Ground
Transmit Data
2
----------
3
Receive Data
Receive Data
3
----------
2
Transmit Data
Signal Ground
7
----------
7
Signal Ground
Data Terminal Ready
20
----------
5
Clear to Send
----------
6
Data Set Ready

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Country/Region: Flag India

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