Scanivalve MPS4232 - Section 5: Software; Overview; MPS Commands

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MPS4232
Section 5: Software
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The MPS4200 is a single user network server that supports connecons from a Telnet Client and Web Browser Client. The
operaon of a MPS module is controlled by sending commands to selected modules by network addressing via the network.
The MPS returns data or informaon over the network to the requesng client/host.
The MPS4200 also supports serial communicaon that can be used to set conguraon variables, diagnoscs and trouble-
shoong, or used when the MPS’s IP address is not known.
The secon on MPS Commands lists each command and explains its funcon.
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The MPS soware must run as embedded soware on the MPS pressure scanner hardware. It performs the following
general tasks:
1. Read and lter 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 conguraons to be saved through power down.
5. Output converted data, status, setup and calibraon 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 troubleshoong 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 opons. The MPS will detect and adjust to the termi-
naon opon being used by a host.
The three opons 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 excepons to this rule are the commands STOP, STATUS, and TRIG. These commands will have a note listed in the
following secons 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 communicaons variable is modied, such as IP, MAC, Gateway, or NAME, the conguraon must be saved, and the
MPS4200 soware must be restarted in order for the changes to take eect.