Advantech PCA-6176 Series User Manual download pdf (Page 39)

33 SNMP-1000-B2 User Manual

Chapter 4 Programming SNMP-1000-B2

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6. On the host computer side send 5\r. SNMP-1000-B2 will respond 5\n\n and

enter the pass through command mode.

Host computer side sends:

"5\r"

SNMP-1000-B2 responds:

"5\n

Command :"

Once the pass through command mode is entered, SNMP-1000-B2 is ready to

receive commands.

4.3 Command and Response Syntax

The format of commands and responses is displayed as follows:

a. Write command: w!!&xxx

b. Read command: r!!&

c. Response: [repeat received command]\n Response: xxx\n

Command:

w: write command

r: read command

!!: device code

&: device subcode

xxx: value in ASCII code; this can be "Done" or "Invalid" in the SNMP-1000-B2

response.

Examples:

1. Write lower limit of Fan 0 to "1000" rpm

EX.

Host computer side sends:

"w1011000\r"

SNMP-1000-B2 responds:

"w1011000\n Response: Done\n Command:"

2. Read lower limit of Fan 0

EX.

Host computer side sends:

"r101\r"

SNMP-1000-B2 responds:

"r101\n Response: 1000\n Command:"

3. If the input command is incorrect then SNMP-1000-B2 will respond with an

invalid message notification.

EX.

Host computer side sends:

"r905\r"

Here the device subcode is over range.

SNMP-1000-B2 responds:

"r905\n Response: Invalid\n Command:"

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Advantech PCA-6176 Series User Manual Page 39

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