PT610, PT620, PT630
Instruction Manual
52
rate is related to the baud rate. Use higher baud rate for faster data rate. If ASCII codes are received by
the indicator for the P(print), Z(zero), T(tare) or C(clear) letters, the indicator will act as if the related
keys had been pressed. CR and LF can be enabled in the related parameters.
The data format of the fast continuous data output is;
[STX][STATUS][SIGN][DISPLAYED WEIGHT VALUE][CR][LF]
Examples :
S+000123.4
(weight is stable and 123.4)
D+000123.4
(weight is dynamic and 123.4)
+
(Over load)
-
(Under load)
O
(ADC out error)
5.4.10.7 BSI Communication
BSI Communication provides conversational access over a Bidirectional Serial Interface. All PT Azure
series products support this convenient communications protocol. It is supported on RS-232C, RS-485,
USB and Ethernet (when present) interfaces.
There are 2 levels of BSI communication;
BSI-BASE: Command set for basic weighing instruments, e.g. taring, zeroing, setpoint loading.
BSI-PRO:Extension of the BASE command set for professional weighing terminals, e.g. commands
related with identification data and application related commands.
The BSI data format gives reliable and fast interface advantages for communicating with PLCs or PCs
for process control or transactional applications. This interfacing is recommended especially for PC
interfacing as you can expand your system with additional scales from PT without having to change
your application program base.
The protocol is very simple to use, a command is sent to the instrument and a response is transmitted
back.
Warning:
Only one interface can have BSI enabled at one time. No check sum [CHK] is used over
Ethernet.
General Rules:
1.
Commands are only in CAPITAL.
2.
CHK (2 ASCII char) can be enabled or disabled from both command and response.
3.
Weight data is 8-byte with decimal and non-significant zeros on the left.
4.
The device address (2 ASCII char) will not be present in the structure when set to 00.
Command format:
A general description of the command is as follows:
[ADR][COMMAND][CHK][CR][LF]
Response format:
A general description of the response with weight / force is the following:
[ADR][COMMAND][STATUS][SIGN][WEIGHT/FORCE][CHK][CR][LF]
Response format without weight / force
[ADR][COMMAND][STATUS][CHK][CR][LF]
Command Table: BSI-BASE (all PT6X0 series)
A
Read all weight data immediately
B
Read Gross weight value immediately
C
Clear the tare memory
G
Read the voltage value of the DC power supply
I
Read current indicated weight value immediately
P
Print: Read the current stable weight value
Q
Load set points
R
Read set points
S
Read Status