Inhemeter

Hi Mikko,
I am having a connection issue with this meter (Identification: IHM5\2Inhe Meder). The SNRM frame (03 03) is correct and works fine in other software.
The communication log reveals the exact problem during the IEC Mode E handshake:
1. Gurux sends the baud rate change command: 06 32 35 32 0D 0A
2. Gurux closes and reopens the COM port to change settings from 7E1 to 8N1 (takes ~110ms).
3. The Bug: After reopening the port, Gurux waits exactly 1000ms before sending the SNRM request:
• Log: 13:40:35.502 Info Open
• Log: 13:40:36.510 Sent 7E A0 07 03 03 93 8C 11 7E
4. This 1-second delay is too long for the meter. It times out and returns to sleep mode.
InactivityTimeout and FrameDelay are already set to 0.
Is there a hidden parameter or a way to eliminate this hardcoded 1000ms delay after the port reopen, so the SNRM can be sent immediately?
Best regards,
Frank
here the Log:
13:40:31 01:40:31.378 Info Opening
13:40:31 01:40:31.378 Info Einstellungen für die serielle Schnittstelle: Portname: COM19 Baudrate: 300 Daten Bits: 7 Parität: Even Stopp-Bits: One Ablaufsteuerung: None Eop: None
13:40:31 01:40:31.388 Info Open
13:40:32 01:40:32.399 Sent 2F 3F 21 0D 0A
13:40:32 01:40:32.736 Received 2F
13:40:32 01:40:32.784 Received 2F
13:40:32 01:40:32.816 Received 49
13:40:32 01:40:32.848 Received 48
13:40:32 01:40:32.880 Received 4D
13:40:32 01:40:32.912 Received 35
13:40:32 01:40:32.944 Received 5C
13:40:32 01:40:32.976 Received 32
13:40:33 01:40:33.008 Received 49
13:40:33 01:40:33.041 Received 6E
13:40:33 01:40:33.072 Received 68
13:40:33 01:40:33.105 Received 65
13:40:33 01:40:33.137 Received 20
13:40:33 01:40:33.184 Received 4D
13:40:33 01:40:33.216 Received 65
13:40:33 01:40:33.248 Received 74
13:40:33 01:40:33.280 Received 65
13:40:33 01:40:33.312 Received 72
13:40:33 01:40:33.344 Received 0D
13:40:33 01:40:33.344 Sent 06 32 35 32 0D 0A
13:40:35 01:40:35.358 Info Closing
13:40:35 01:40:35.486 Info Closed
13:40:35 01:40:35.486 Info Opening
13:40:35 01:40:35.486 Info Einstellungen für die serielle Schnittstelle: Portname: COM19 Baudrate: 9600 Daten Bits: 8 Parität: None Stopp-Bits: One Ablaufsteuerung: None Eop: None
13:40:35 01:40:35.502 Info Open
13:40:36 Send SNRM request.
TX: 7E A0 07 03 03 93 8C 11 7E
13:40:36 01:40:36.510 Sent 7E A0 07 03 03 93 8C 11 7E
13:40:41 Failed to receive reply from the device in given time.
13:40:41 Send Disconnect request.
TX: 7E A0 07 03 03 53 80 D7 7E
13:40:41 01:40:41.519 Sent 7E A0 07 03 03 53 80 D7 7E
13:40:46 Failed to receive reply from the device in given time.
13:40:46 01:40:46.531 Sent 01 42 30 03 0D 0A