GS-C200 View Datasheet(PDF) - STMicroelectronics
Part Name
Description
Manufacturer
GS-C200 Datasheet PDF : 31 Pages
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GS-C200 / GS-C200S
Command
Z
±xxxxxx
Description
The Zero the speed command allows a smooth stop of the motion system.
When the GS-C receives this command it reduces the stepping rate to ”zero” through a deceleration
ramp and it stops the program execution. If there is no motion when activated, the program
execution is immediately stopped. By using this command it is possible to stop the motor still
maintaining trace of the system position.
The program can be subsequentely restarted through an E command.
The incremental positioning command allows the user to perform a movement referenced to the
actual position. The command can be issued either with a + or – sign that defines the direction of
the motion, and it is followed by an argument ranging from 1 and 999999 that defines the number of
steps to be executed.
The Incremental position command can be mixed to the Goto absolute positioning command in a
program, and it is normally used in a subroutine.
The Incremental position command is of the delayed execution type and it occupies 4 memory
locations.
During the program execution, the GS-C accepts
only the F, Z and K commands. Any other command
sent to the GS-C during the program execution has
no effect, and the module will respond to the Host
Computer by sending the answer B (Busy).
The GS-C200S programming requires a specific
attention because, when a program includes a jump
command, it is mandatory to address the proper
memory position to correctly execute the sequence.
For this purpose it is mandatory to define the jump
memory location by adding, for each program in-
struction, the proper bytes length that is specified
in the command description. The program starts
from memory address 0.
THE PROGRAM STORAGE AREA
The GS-C contains two storage areas reserved to
the User. The first is the microprocessor Random
Access Memory from where the motion program is
executed, the second is an EEPROM where the
programs are saved. The EEPROM contains a
program or a command sequence programmed by
the user that can be transferred into the RAM
memory by using the X command.
The RAM contains either a program or a command
sequence sent by the Host computer or transferred
from the EEPROM. In any case the program that is
executed when an E or Goto command is issued.
is the one contained in the RAM.
If the program is sent by the Host, it is checked to
verify if the logical and physical correctness has
been respected and if the storage capability is not
exceeded. In case an error is detected, it is notified
to the Host through an appropriated error message.
The number of instructions that can be stored de-
pends on the type of instruction, and typically it
ranges between 30 and 60, for a total of 119 mem-
ory locations.
THE POWER SUPPLY
The GS-C module contains a high efficiency switch
mode power supply. It generates the various regu-
lated voltages required for the proper operation of
the internal logic and the communication port, start-
ing from an unregulated input voltage that can
range from 12 to 40 Volt. The module also features
a 5V output capable of delivering up to 100mA,
which can be used to supply external devices or the
logic port of a GS-D module. This output is pro-
tected against short circuit to ground. Two outputs
at ±12V are available with a current capacity of
10mA.
PROGRAM EXAMPLES
After the description of the communication protocol,
of the various commands and of the various mes-
sages, some simple programs examples are given
in the following.
Example 1
The required action is to run a motor at 1000
steps/sec. rate, with a start-stop rate of 100
steps/sec., and a ramp length of 50 steps. The
target position to be reached is the step 500000.
The operative sequence is the following:
1) Connect the GS-C200 to an Host Computer
equipped with the advanced Basic program.
2) Power-on the GS-C200.
3) Enter the DOS operating system and then run
the F.A.S.T. program (see the GS-C200PROG
datasheet).
4) Start the programming session by typing the
following command sequence:
F↓
Read the controller status.
A Ready is answered by the GS-C.
I3↓
Clear the position counter and the
USER outputs.
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