---
name: "isotpdump"
section: "1"
platform: "linux"
package: "can-utils"
version: "2023.03-1"
release: "Debian 13 (Trixie)"
platforms: ["linux"]
url: "https://new.carta.tech/isotpdump"
---

# isotpdump(1)

manual page for isotpdump 2023.03-1

## NAME

isotpdump - manual page for isotpdump 2023.03-1

## SYNOPSIS

**isotpdump** \[*options*\] *\<CAN interface\>*

## OPTIONS

- **-s** \<can\_id\>

  (source can\_id. Use 8 digits for extended IDs)

- **-d** \<can\_id\>

  (destination can\_id. Use 8 digits for extended IDs)

- **-x** \<addr\>

  (extended addressing mode. Use 'any' for all addresses)

- **-X** \<addr\>

  (extended addressing mode (rx addr). Use 'any' for all)

- **-c**

  (color mode)

- **-a**

  (print data also in ASCII-chars)

- **-t** \<type\>

  (timestamp: (a)bsolute/(d)elta/(z)ero/(A)bsolute w date)

- **-u**

  (print uds messages)

CAN IDs and addresses are given and expected in hexadecimal values.

UDS output contains a flag which provides information about the type of the message.

### Flags:

- \[SRQ\]

  \= Service Request

- \[PSR\]

  \= Positive Service Response

- \[NRC\]

  \= Negative Response Code

- \[???\]

  \= Unknown (not specified)