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485DSS3298 Manual

13

Example:  A unit with a decimal address of ten will have a delay of
220 milliseconds [(10 x 0.02) + 0.02 = 0.22 seconds].

Command character:

ACK  (decimal 6)

Example 1:  To request status from the 485DSS set to address 11 (

0B hex) decimal.

       HOST transmits:    Xoff   “0”    “B”   ACK

          ( 19     48      66    6 decimal)

          ( 13     30      42    6 hex)

       Reply:  “A” “0” “B” “0” “1” cr

The reply indicates that the RS-232 port has no connection to the
network on unit 11 and the CTS handshake line is in the high state.

Example 2:  Request status from all the 485DSS's on the network.

       HOST transmits:    Xoff   DC2   DC2   ACK

          ( 19     18      18       6 decimal)

          ( 13     12      12       6 hex)

             Reply:  “A” “0” “1” “0” “0” cr

             Reply:  “A” “0” “2” “1” “0” cr

             Reply:  “A” “0” “3” “0” “0” cr

             Reply:  “A” “1” “1” “0” “1” cr

The reply indicates the following:

Unit 1 waited 40 milliseconds and then sent a reply indicating
no connection of the RS-232 port to the network and the CTS
handshake line is in the low state.

Unit 2 waited 60 milliseconds and then sent a reply indicating
connection of the RS-232 port to the network and the CTS
handshake line is in the low state.

Unit 3 waited 80 milliseconds and then sent a reply indicating
no connection of the RS-232 port to the network and the CTS
handshake line is in the low state.

Unit 17 decimal (11 hex) waited 360 milliseconds and then
sent a reply indicating no connection of the RS-232 port to the
network and the CTS handshake line is in the high state.