Micromod Micro-DCI: 53SL5100B Single Loop Controller Manuel d'utilisateur télécharger pdf (Page 103)

53SL5100B Single-Loop Controller

INSTRUCTION MANUAL

4. ACKNOWLEDGE - This message signals the addressed instrument that its last echoed change

message was received correctly; the instrument performs the change requested.

01111110 80H + I.A.

INSTRUMENT TO HOST:

1. RESPONSE - This message furnishes the data requested by the INTERROGATE command of the

Host. It is also used to echo back the previous CHANGE message of the Host.

01111110 20H + I.A. NUM LO ADD HI ADD Data 1 XXXXX Data N LRC

Communication Transaction Examples

Transaction A Example - Host requests 9 bytes of data beginning at hexadecimal memory address 1000H

from the instrument at Datalink address 03.

1. Host sends INTERROGATE message.

01111110 11100011 00001001 00000000 00010000 11111100

SOH

Command

+ I.A.

NUM LO ADD HI ADD LRC

2. Instrument sends RESPONSE message.

01111110 00100011 00001001 00000000

00010000 XXXXX XXXXX XXXXX LRC

SOH

Command

+ I.A.

NUM LO ADD HI ADD Data 1 ................. Data 9

Transaction B Example - Host or SUPERVISOR-PC sends two bytes of new data, to be loaded into the

instrument at Datalink address 03 beginning at hexadecimal memory address 1000H.

1. Host sends CHANGE message.

01111110 10100011 00000010 00000000

00010000 00001000

00001100

11001001

SOH

Command

+ I.A.

NUM LO ADD HI ADD Data 1 Data 2 LRC

2. Instrument sends RESPONSE message.

01111110 00100011 00000010 00000000

00010000 00001000 00001100

01001001

SOH

Command

+ I.A.

NUM LO ADD HI ADD Data 1 Data 2 LRC

3. Host sends ACKNOWLEDGE message.

01111110 10000011

SOH Command

1 2 ... 98 99 100 101 102 103 104 105 106 107 108 ... 114 115

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Micromod Micro-DCI: 53SL5100B Single Loop Controller Manuel d'utilisateur Page 103

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