KM SVS2000, Installation & Operation Manual, Page: 74 / 89

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97-1129-01 Rev. D
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If it does not, contact kistler morse. The display then returns to:
99 DIAGnOSTICS
4. Press the Gross or net Key to return to Run Mode
SerIal coMMandS
This section contains the serial commands and protocol syntax used for serial communications between the
host or Master (ROPE, PC, MVS, etc.) and the SVS 2000. Detailed explanations and examples of the commands
are included.
HEX ASCII Function Send (to SVS2000) Receive (from SVS2000)
23 # km product identification number >aa#ssr Addssr (A4064r for SVS2000)
57 W Request engineering units (gross) >aaWssr A+dddddddssr
42 B Request engineering units (net) >aaBssr A+dddddddssr
54 T Tare vessel >aaTssr Ar
75,31 u1 Request raw counts >aau1ssr Adddddddssr
Table below defines each character used in the send and receive messages.
Character Definition
> Start of message character
aa Two-digit ASCII HEX character address of channel
d One-digit ASCII decimal number data
dd Two-digit ASCII decimal number data
dd.. Two-digit or more ASCII decimal number data
dd..dd Multiple ASCII decimal numbers
hh Two-digit ASCII HEX number, upper nibble, lower nibble
hh..hh Multiple two-digit ASCII HEX numbers
ss
Two-digit ASCII HEX checksum of characters added between ‘>’ or ‘A’ and checksum
characters. See Checksum Calculation in this chapter for an explanation of how checksum is
calculated. note that the ‘?’ character in place of the checksum characters is a wildcard and
therefore ignores the checksum.
r Carriage return (0x0D)
A Acknowledge character (0x41)
n not acknowledge character (0x4E)
±
normally indicates polarity. If an error is present, an ‘X’ displays with an error code (ASCII
character) immediately following. Possible error codes and definitions are listed below:
1 — unit disabled
6 — ADC overrange error
7 — net or gross engineering unit overflow