Conrad Charge Manager 2010 Protocol overview Transfer settings: 9600 baud, 8 Data bits, no parity, 1 Stopbit Connection via Null modem cable. The CM2010 always sends info about the condition of each slot. The delay between 2 infos about the same slot is 1 second. It seems you can't send commands to the CM2010 because the circuit plan from www.conrad.de (512265-in-01-de-charge_manager_2010_schnittstellenb.pdf) shows no input for the charging controller. All values about a slot are sent in 34 Bytes. There are 4 Packets of 34 Bytes each. All values are in Big-Endian (Big-End-First; 65536 = 01 00 00; 256 = 01 00) Bytes Meaning ----- ---------------------- 01 Slot (1-4) 02 ??? Chosen Program; Lo: Display state (Details: see below) 03 Hi: manually chosen capacity; Lo: current step in program (Details: see below) 04 ??? 05 Internal counter/timer, counts back the 3 seconds after insertion of battery, where you have time to change settings. Otherwise it counts back from 60d and increases minute when 00. 06 Hours 07 Minutes 08 ??? 09-10 Voltage (U) - only when charging, otherwise 00 00. Perhaps max. current for Delta-U-shut-off. 11 ??? (perhaps approx. charge of battery?) 12 ??? 13 ??? 14-15 Current (I) 16-17 Voltage (U) 18-20 Charged capacity (CCap) 21-23 Discharged capacity (DCap) 24 0Bh, if not charging, otherwise something else 25-26 Fourth last voltage 27-28 Third last voltage 29-30 Second last voltage 31-32 Last voltage 33-34 Resistance in slot (5MOhm = 01 F4; no battery: FF FF) Bytes 02 and 03: 02 03 04 -- -- -- 00 00 00 No program, Slot empty 01 00 00 Choice: Auto/Man: Auto 02 00 00 Choice: Auto/Man: Manual (Counter in Byte 5 counts from 03 to 00 and then switches to next choice) 02 10 00 Choice: Man: 100-200 02 20 00 Choice: Man: 200-350 02 30 00 Choice: Man: 350-600 02 40 00 Choice: Man: 600-900 02 50 00 Choice: Man: 900-1200 02 60 00 Choice: Man: 1200-1500 02 70 00 Choice: Man: 1500-2200 02 80 00 Choice: Man: 2200-... (Counter in Byte 5 counts from 03 to 00 and then switches to next choice/runs program) 03 xx 00 Choice: Auto: CHARGE 04 xx 00 Choice: Auto: DISCHARGE 05 xx 00 Choice: Auto: CHECK 06 xx 00 Choice: Auto: CYCLE 07 xx 00 Choice: Auto: ALIVE (xx - 00:Auto, 10-80:Man) (Counter in Byte 5 counts from 03 to 00 and then runs the program) 08 05 01 Auto: CHA (Charges) 09 06 00 Auto: DIS (Discharges) 09 26 08 Man: 200-350: DIS (Discharges) 0a 04 01 Auto: CHK (Discharges) 0a 24 08 Man: 200-350: CHK (Discharges) 0b 03 01 Auto: CYC (Charges) 0b 04 01 Auto: CYC (Discharges) 0b 05 04 Auto: CYC (Charges after Discharging) 0c 01 01 Auto: ALV (Charges) 0c 02 01 Auto: ALV (Discharges) 0c 02 03 Auto: ALV (still Discharges) 0c 02 04 Auto: ALV (still still Discharges) 0c 02 08 Auto: ALV (Discharges after Charging) 0c 03 01 Auto: ALV (Charges after Discharging) 0c 03 02 Auto: ALV (Charges after Discharging immer immer noch) 0c 03 03 Auto: ALV (Charges after Discharging immer noch) 0c 04 01 Auto: ALV (Discharges after Charging) 0c 04 03 Auto: ALV (Discharges after Charging after Discharging) 0c 04 08 Auto: ALV (Discharges after Charging after Discharging) 0c 05 01 Auto: ALV (Charges after Discharging after Charging after Discharging) 0c 05 02 Auto: ALV (Charges after Discharging after Charging after Discharging) 0c 05 04 Auto: ALV (Charges after Discharging) 0c 42 06 Man: 600-900: ALV (Discharges after Charging) 0c 44 06 Man: 600-900: ALV (Discharges after Charging after Discharging after Charging) 0d 08 01 Auto: CYC (RDY/Fertig) 0d 08 02 Auto: CHA (RDY/Fertig) 0d 08 03 Auto: ALV (RDY/Fertig) 0d 08 04 Auto: ALV (RDY/Fertig) 0d 48 04 Man: 600-900: ALV (RDY/Fertig) 0e 0c xx ERR 1b 03 01 Auto: CYC (Charges immer noch) 4c 03 03 Auto: ALV (Charges immer immer noch) 4c 05 04 Auto: ALV (Charges after Discharging after Charging after Discharging after Charging) 58 25 02 Man: 200-350: CHA (Charges) 5b 23 02 Man: 200-350: CYC (Charges) 5c 21 02 Man: 200-350: ALV (Charges) 5c 41 04 Man: 600-900: ALV (Charges) 5c 43 04 Man: 600-900: ALV (Charges after Discharging) 5c 45 04 Man: 600-900: ALV (Charges (last phase)) 6b 03 03 Auto: CYC (still still still still Charges) 6c 03 03 Auto: ALV (Charges after Discharging) 6c 05 04 Auto: ALV (Charges after Discharging after Charging after Discharging after Charging) cb 03 04 Auto: CYC (still Charges) db 03 03 Auto: CYC (Charges ... for now) db 03 04 Auto: CYC (still still still Charges) dc 03 02 Auto: ALV (Charges after Discharging) dc 05 03 Auto: ALV (Charges ... for now) fb 03 03 Auto: CYC (still still Charges) The Lo-Part of Byte 2 reflects the current display: H bbbb Description - ---- ----------- 0 0000 --- 1 0001 Choice: Auto/Man: Auto 2 0010 Choice: Auto/Man: Manuell 3 0011 Choice: Auto: CHARGE 4 0100 Choice: Auto: DISCHARGE 5 0101 Choice: Auto: CHECK 6 0110 Choice: Auto: CYCLE 7 0111 Choice: Auto: ALIVE 8 1000 CHA 9 1001 DIS a 1010 CHK b 1011 CYC c 1100 ALV d 1101 RDY e 1110 ERR f 1111 TRI The Lo-Part of Byte 3 reflects the program flow: H bbbb Description - ---- ----------- 0 0000 No program active 1 0001 Charging <--- ALV starts here 2 0010 Discharging 3 0011 Charging <--- CYC starts here 4 0100 Discharging <--- CHK starts here 5 0101 Charging <--- CHA starts here 6 0110 Discharging (is being skipped, only when DIS, the program starts here) 7 0111 Trickle charge 8 1000 RDY/Ready The Hi-Part of Byte 3 reflects the chosen battery capacity: H bbbb Description - ---- ----------- 0 0000 Automatic 1 0001 100- 200 mAh 2 0010 200- 350 mAh 3 0011 350- 600 mAh 4 0100 600- 900 mAh 5 0101 900-1200 mAh 6 0110 1200-1500 mAh 7 0111 1500-2200 mAh 8 1000 2200-... mAh Byte 4 seems to reflect, if the capacity is being measured or not: 01 or 02 = Measuring, if 00, updating the battery symbol, 03/04 occurs during CYC. More informations of corrections via eMail to Markus Birth <mbirth@webwriters.de>.