The PDM uses a $E Command to request status from the Pod. The only parameter is this command is a single byte that contains the type of status to be returned. The command format is as follows:

OFF 1  2
Oe 01 TT

• byte 0e: mtype of 0e
• byte 01: length, fixed 1-byte command length
• byte TT: request type
  • $00 1D Status Response - standard status response
  • $01 02 Response, Type 1 - unacknowledged alert status
  • $02 02 Response, Type 2 - detailed (fault) status
  • $03 02 Response, Type 3 - up to the last 60 pulse log entries and other info
  • $05 02 Response, Type 5 - various information including the Pod initialization time
  • $50 02 Response, Type 80 - the last 50 pulse log entries
  • $51 02 Response, Type 81 - like Type 80 ($50), but up to the last 50 entries before the last 50 entries

The usual PDM status request for type 0 yields a Command-1D-Status-response response from the Pod. This is the same response that the pod returns for all for non-fault & non-error commands after pairing. All of the other $0e command type requests will generate a Command-02-Pod-Information-Response from the Pod of varying different formats depending on the request type.

Request type 0 example:

Oe 01 TT
0e 01 00                                                PDM request type 0

1d SS 0PPPSNNN SSTTTTRR
1d 19 061f6800 044295e8                                 Pod responds with $1D status

Request type 1 example:

Oe 01 TT
0e 01 01                                                PDM request type 1

02 13 01 XXXX VVVV VVVV VVVV VVVV VVVV VVVV VVVV VVVV
02 13 01 0000 0000 0000 0000 0000 0000 0000 0000 0000   Pod responds with $02 Pod information type 1

More Examples can be found here:

• Status Packets
• Status packets reservoir level 40U
• Status packets 40U in reservoir

This command can only be used when the current Pod Progress State is between 3 and 14.

This command can be successfully used on a faulted (screaming) pod, but request type 0 will return a Type 2, Pod Info 02 Response on the faulted pod while all other request types will return the requested Command-02-Pod-Information-Response information.