User manual

Copyright © 2005, ZMD AG, 2005-05-17 3/8
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ZMD31050
Advanced Differential Sensor Signal Conditioner
Application Note PRELIMINARY
1.4 Troubleshooting
Communication problems:
• If software don’t found the communication board check in “system control” of your computer for
accessible COM ports etc. – refer “CB_descr_*.pdf” for details)
• If software get no access to ZMD31050 (e.g. message “… Command Mode failed …”) verify power
supply of the ZMD31050 (wrapped jumpers, measure supply voltage @ K10 Vsupply-GND, …).
Software can detect type of connected SSC board - in headline of software type of founded SSC
board is messaged. Verify board type …
• Try it again with other software (ZMD31050_SSC2.exe).
• A error code is displayed in case of communication errors in software. ZMD31050_SSC2 messages
errors in “SendCommand & ReadoutData” frame. An error code is an “e” with a number of three
digits e.g. “e032”. Refer “tech_desr_comm._board_revxxx.pdf” for detailed error description. At
using ZMD31050-software press “Read” button in “ReadOut Data” frame of main window “ or open
“RAM-Register” dialogue (RAM_EEP-icon) and press also “Read” button. Error code is displayed
in related output data fields.
• If all this doesn’t help send problem description with screenshots of software, software version
(about dialogue), error code etc. to ZMD support. Use mail task in about/support dialogue for this.
T01100 set trigger, communication should start
100ms after power on
IWT7800172 I2C, power on & send cmd: "72"
= activate ZMD31050 command mode
IW_7800102 I2C, send cmd: "02" = start cylce ram
IR_78002 I2C, read 2 bytes of SIF output register
=> 0x2AEC digital readout result of conditioning
change adjustment of potentiometer on sensor
replacement board now => changed input signal
IR_78002 I2C, read 2 bytes of SIF output register
=> 0x4C80 digital readout result of conditioning
changed input signal delivers also other output signal
IW_7800129 I2C, send cmd: "29"
= read content fof RAM register 0x19
content of addressed register is copied to SIF output,
continuous conditioning (“cycle_ram”) is stopped
IR_78002 I2C, read 2 bytes of SIF output register
=> 0x9806 register content of RAM register 0x19
ZMC SSC Terminal