C
alc norm
triggers the calculation of the display scaling factor according to the strain
indicator functionality. Hereby the K-factor, the bridgetype, the input sensitivity and -
depending on the bridgetype - the poissons ratio will be concidered
.
At the same time
channel 0 will be setted, as well as the amplification of the AD-converter setted to one and
the unit shown to µm/m.
Possible error codes 0xA1,0x81,0x71
Set TXmode
Command number: 128
Number of parameters: 1
Bytes sent by the GSV: 0
With Set TX mode changes can be done to the serial data protocol. This command can
only be executed if the configuration jumper JP2 is set, see
Set Baud
(next page), the
changing procedure in also described there. With Bit 7 of the parameter byte the
hardware-handshaking can be enabled, with bit 3 the size of the measuring data frame
can be changed from 5 Bytes (bit 3 =1, default setting) to 3 bytes (bit 3 =0). The 3-byte-
protocol has 0xA5 as the prefix byte, then follows the measuring value as 16 bit value with
the MSByte first. Higher data rates are possible with this protocol.
Hardware Handshake may be better – in some cases even necessary – if the GSV-2s serial port is
connected to a bus-system or a wireless transmitter.
MSB
Bit 6
Bit 5
Bit 4
Bit 3
Bit 2
Bit 1
LSB
Is H.sh. x
x
x
Is 5 Byte
x
x
x
Is 5 Byte
=1: if the binary transmission protocol is aktive (see Set Mode), the measuring value frame consists
of 5 bytes.
Is H.Sh.
=1: Hardware handshake (RTS/CTS) enabled. Only possible with HW-Handshake special version.
X: Reserved. Do not change.
GetTXmode
Command number: 129
Number of parameters: 0
Bytes sent by the GSV: 1
With
GetTXmode
you can read flags about the features of the measuring value
transmission protocol.
MSB
Bit 6
Bit 5
Bit 4
Bit 3
Bit 2
Bit 1
LSB
Is H.sh. x
x
WRacc
Is 5 Byte
x
x
Configuration
Configuration
: If =1, the jumper JP2 for the configuration mode id set. Read Only!
Is 5 Byte
=1: If the binary transmission protocol is active (see Set Mode), the measuring value frame consists
of 5 bytes.
Wracc
=0: RS232 serial port has write access. =1: All Write Commands blocked. Read Only!
Is H.Sh.
=1: Hardware handshake (RTS/CTS) enabled. Only possible with HW-Handshake special version.
X
: Reserved. Do not change.
Possible error codes 0xA0,0x91
SetBaud
Command number: 130
Number of parameters: 1
Bytes sent by the GSV: 0
With
SetBaud
you can determine the bitrate of the serial communication. The bitrate can
only be changed if the jumper for the configuration mode JP2 is set, see p.62. The
ME-Meßsysteme GmbH, Neuendorfstr. 18a, D-16761 Hennigsdorf
38
Phone 03302 78620 60, Fax 03302 78620 69,
,
www.me-systeme.de/en
Summary of Contents for GSV-2AS
Page 65: ......
