HBM CMD600 User manual

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Digital Charge amplifier
CMD600
User manual
Interface Description

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CMD600
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Content Page
1 Introduction 6. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2 Network settings 6. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3 Configuration via Telnet interface 7. . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3.1 Establishing the TELNET connection 7. . . . . . . . . . . . . . . . . . . . . . . . .
3.2 Parameters format 8. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
4 Discovery procedure 9. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
5 Data Streaming 14. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
6 List of commands 14. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
AUTOSCALE_ALLOW 25. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
CH_ANALOG_OUT_MODE 20. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
CH_AUTOSCALE 25. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
CH_CLEAR_LIMIT_SWITCH 22. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
CH_COUNT 15. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
CH_EASYTEACH 26. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
CH_GAIN 15. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
CH_GET_LIMIT_SWITCH 22. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
CH_GET_PEAK_VALUES 20. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
CH_HPF 17. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
CH_LIMIT_SWITCH 21. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
CH_LPF 17. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
CH_OUT_OFFSET 18. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
CH_OVERLOAD_RESERVE 24. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
CH_SELECT 14. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
CH_SENSOR_SENSITIVITY 17. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
CH_STATUS_EXTENDED 19. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
CH_SYS_GAIN 16. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
CH_VALUE 18. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
CONNECTION_TIMEOUT 31. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

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7 Debug commands 37. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
ACH_NALOG_GAIN 39. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
CH_DAC_OUT_OFFSET 37. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
SET_RGB_LED 42. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
CH_GAIN_LIMIT 37. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
CH_INPUT_OFFSET 38. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
CH_CAL_DAC 38. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
AD_DATA 38. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
CH_PGA_GAIN 39. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
CH_SELECT_FILTER 39. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
DEBUG_HELP 42. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
PAR_PRINT 41. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
PAR_SET 40. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
SET_GPIO 41. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
DATA_STREAM_ENABLED 33. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
DATA_STREAM_RATE 32. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
DATA_STREAM_TARGET 32. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
DEVICE_NAME 28. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
DIGITAL_INPUT 22. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
DIGITAL_OUTPUT 24. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
EASYTEACH_ALLOW 26. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
ENGINEERING_UNIT 15. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
ETHERNET_ADDRESS 31. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
FACTORY_DEFAULT 35. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
GET_DIGITAL_INPUT 23. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
HELP 35. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
IP_ADDRESS 30. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
MANUCAFTURER_DATA 28. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

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PAR_PACKET_COPY 33. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
PAR_PACKET_POINTER 34. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
PAR_PACKET_SWITCH 34. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
PROTECT_PARAM 29. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
RESET 27. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
RESET_PEAK_VALUES 21. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
RESET_POLARITY 27. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
RESTART 35. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
SET_DIGITAL_OUTPUT 23. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
STATS 40. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
8 System parameters 43. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

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1 Introduction
The digital adjustable charge amplifier CMD600 has an Ethernet interface for
configuration and digital data−streaming and a real−time signal output as
"10VDC voltag output.
On power−up is output voltage −10V and both digital outputs are on logical
state 0. The power-up time is 300 ms.
2 Network settings
Each unconfigured amplifier comes from production with preset unique
Ethernet address and factory default settings. Default IP address is
192.168.1.10 and netmask 255.255.0.0. DHCP is enabled by default.
If there is no DHCP server on the network it can happened that development
computer is not necessary on the same subnet as amplifier (IP address
different from 192.168.1.X). If this is true there should be taken care about
this. For this purpose IP address on development computer should be set as
on Figure Fig. 1.
When the connection to amplifier is established IP address can be changed to
suit desired subnet. If DHCP is enabled IP settings of amplifier are set
automatically.
Fig. 1: Development computer IP settings

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3 Configuration via Telnet interface
Configuration is done via standard TELNET protocol. Only one TELNET
session is possible in given time.
Charge amplifier accepts text commands, which are terminated with CR (hex
code 0D). Optional LF characters are ignored.
Charge amplifier accepts one command at once. After command is issued,
charge amplifier will respond in maximum response time. Maximum response
time is <TBD>.
All responses from charge amplifiers begins with “OK,” or “ERROR,”.
Charge amplifiers do not distinguish between lower and uppercase
characters. All input data is converted to lowercase characters before
command parsing.
Charge amplifier default echoes back all characters. Default is restored after
in each new session. This allows use of simple terminal emulators. Echo can
be disabled with telnet option command. This is useful, when charge amplifier
is controlled from SW application on PC.
Charge amplifier has an adjustable idle time disconnect function. If there is no
data in 30 minutes, telnet session is closed. Optionally can be implemented
command, which disables this function.
3.1 Establishing the TELNET connection
1. Find IP address of CMD600 via CMD Assistant −> Device−Scan for
modules
2. Factory settings : IP adress 192.168.1.1 ; Sub Net mask : 255.255.255.0
3. Establish Telnet connection (Windows−Start−Button −> Run and enter:
Telnet xxx.xxx.xxx.xxx)
Example:

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3.) Enter command: e.g. factory_default
The factory settings have now been loaded. For the complete List of
commands see chapter 3.
3.2 Parameters format
Int (integer) is signed 32 bit number.
Float numbers are always returned in float representation with 4 decimal
places(example –3.4567E−9).
Decimal delimiter is period. No thousand separator is used.

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4 Discovery procedure
When measurement application does not know the IP address of charge
amplifier it can send UDP broadcast discovery packet. It should use Ethernet
broadcast address (ff:ff:ff:ff:ff:ff) and IP broadcast address (ff.ff.ff.ff). The
destination port should be 85 and source port should be 86. The packet
should have 4 data bytes : 0x77, 0x68, 0x65, 0x72.
The whole discovery packet capture is shown on Figure Fig. 2.
Fig. 2: Discovery packet capture
After reception of discovery packet all charge amplifier on the network starts
to send discovery response packet. Discovery response packet is unicast
UDP packet with destination IP address of discovery sender and source IP
address of the amplifier. Source port is 85 and destination port is 86.
Within discovery response packet there is additional information (26 bytes)
about amplifier:
•Amplifier IP
•Device ID
•Device description
Example of discovery response data definition.
unsigned char deviceDesc[26] =
{
10,60,250,143,
// textual representation of IP address (4 bytes)
ff, 35, a1, 0, 0, 1,
// textual representation of amplifier ID(6 bytes)
’E’, ’m’,’s’,’i’,’s’,’o’,’ ’,’c’,’h’,’a’,’r’,’g’,’e’,’0’,’1’,
// Device descriptiom (15 bytes)
0
// end of discovery response packet
};

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A complete discovery response packet capture is shown on
Fig. 3: Discovery response packet capture
After receiving discovery response packet measurement application have
enough information to established telnet session with amplifier and set other
parameters.
Discovery procedure II
To ensure the compatibility of CMD600 interface with other customer’s
product there is also additional discovery mechanism implemented.
To ensure the compatibility of CMD600 interface with other customer’s
product there is alsoadditional discovery mechanism implemented.
Network parameters
•Configuration mode (fixed or automatically, ie DHCP) in the case of fixed
’IP addressand subnet mask
•Router Address / Gateway Address i.e. IP address (default route):
telegrams to hostswithin the connected network segments, or arising out of
the configuration resultingroutes are not available, be sent to this address.
An advanced configuration option formore complex routes will not be
implemented because they are for the user in normal andcomplicated
network topologies is not necessary
•TCP port: port number on which the component of a TCP connection in
order tocommunicate with the firmware is adopted. Besides this, more
ports of standard servicessuch as FTP, Telnet, ... serves
•UDP port: This adjustable receiver port number are sent real−time data