Scanivalve MPS4232, Руководство по аппаратному и программному обеспечению

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MPS4232
Section 5: Software
SECTION 5: SOFTWARE
Overview
The MPS4200 is a single user network server that supports connections from a Telnet Client and Web Browser Client. The
operation of a MPS module is controlled by sending commands to selected modules by network addressing via the network.
The MPS returns data or information over the network to the requesting client/host.
The MPS4200 also supports serial communication that can be used to set configuration variables, diagnostics and trouble -
shooting, or used when the MPS’s IP address is not known.
The section on MPS Commands lists each command and explains its function.
MPS Commands
The MPS software must run as embedded software on the MPS pressure scanner hardware. It performs the following
general tasks:
1. Read and filter the raw A/D counts that represent pressure and temperature.
2. Convert the pressure A/D counts to user chosen pressure units.
3. Receive and execute commands from the Ethernet link.
4. Allow configurations to be saved through power down.
5. Output converted data, status, setup and calibration data over the Ethernet Link.
6. Set the MPS Physical Ethernet Address (MAC Address).
7. Data transfer protocol to be TCP, UDP, or FTP.
8. Support the user in troubleshooting the MPS hardware and system.
TCP/IP does not guarantee that packet boundaries will be maintained between a host and a MPS module. Therefore, all
commands from a host must be terminated properly with one of four options. The MPS will detect and adjust to the termi -
nation option being used by a host.
The three options are:
• CR (ASCII 13)
• LF-CR (ASCII 10 - ASCII 13)
• CR-LF (ASCII 13 - ASCII 10)
When a MPS module is not in “READY” mode, most commands are disabled or not accepted. Examples of when the MPS
module may not be in “READY” mode could be:
• During CALZ
• During SAVE
• While Scanning
The exceptions to this rule are the commands STOP, STATUS, and TRIG. These commands will have a note listed in the
following sections if they are accepted when the MPS is not “READY.”
The maximum string length for commands sent to the MPS4200 is 79 characters. Any command received that is longer than
79 characters will be discarded and an error will be generated.
When a communications variable is modified, such as IP, MAC, Gateway, or NAME, the configuration must be saved, and the
MPS4200 software must be restarted in order for the changes to take effect.