Micromod Micro-DCI: 53SL6000 Single Loop Controller Bedienungsanleitung Seite 125
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Table C-2. Datalink Protocol
Symbol Description
CMD
Command
It is the operation to be performed or a
description of the message that follows
the Command-I.A. byte. The Command-
I.A. byte has two fields: the Command
field (3 bits) and the I.A. field (5 bits).
There are five commands as follows:
Interrogate, Change, Change Bits,
Acknowledge, and Response.
NUM
Number
The number of data bytes transferred or
requested. The NUM must be a range of
00-32 decimal.
LO-ADD
Lower Address Bits
The least significant 8 bits of a 16 bit
controller address.
HI-ADD
Higher Address Bits
The most significant 8 bits of a 16 bit
controller address.
DATA An 8 bit data byte.
XXXX Represents a variable number of data
bytes.
MASK Has a 0 in every bit position that is
selected to be forced to 0.
STATE Has a 1 in every bit position that is
selected to be forced to 1.
LRC It is the sum of all bytes Modolo 256 of the
message not including the SOH character
or its own bit settings (LRC). It is written at
the end of the message to ensure data
was not lost in transmission.
C.3.1 Message Types
The types of messages that are sent from the host
to the controllers on the datalink are formatted as
follows:
Host to Controller:
1.
Interrogate - This message requests up to 20
H
consecutively stored bytes, beginning at the
specified memory address location of the ad-
dressed controller.
01111110 E0
H
+ I.A. NUM LO ADD HI ADD LRC
2.
Change - This message sends up to 20
H
bytes
of new data to the addressed controller.
01111110 A0
H
+ I.A. NUM LO ADD HI ADD
Data 1 XXXXXXXXX Data N LRC
3.
Change Bits - This message alters only the
specified bits in the specified bytes in the ad-
dressed controller. (NUM = 2N.)
01111110 CO
H
+ I.A. NUM LO ADD HI ADD
Mask 1 State 1 XXXX Mask N State N LRC
4.
Acknowledge - This message signals the ad-
dressed controller that its last echoed change
message was received correctly; the controller
performs the change requested.
01111110 80
H
+ I.A.
Controller to Host:
1.
Response - This message furnishes the data
requested by the Interrogate command of the
host. It is also used to echoe back the pre-
vious Change message of the host.
01111110 20
H
+ I.A. NUM LO ADD HI ADD Data
1 XXXXX Data N LRC
C.3.2 Transaction Examples
Example A -
The host requests 9 bytes of data
beginning at hexadecimal memory address 1000
H
from the controller at datalink address 03.
1.
Host sends Interrogate message.
01111110 11100011 00001001 00000000
SOH Cmd + I.A. NUM LO ADD
00010000 11111100
HI ADD LRC
2.
Controller sends response message.
01111110 00100011 00001001 00000000
SOH Cmd + I.A. NUM LO ADD
00010000 XXXXX XXXXX XXXXX YYYYYYYY
HI ADD Data 1 . . . . . . . Data 9 LRC
Example B -
The host sends 2 bytes of new data,
to be loaded into the controller at datalink address
03 beginning at hexadecimal memory address
1000
H
.
1.
Host sends Change message.
01111110 10100011 00000010 00000000
SOH Cmd + I.A. NUM LO ADD
00010000 00001000 00001100 11001001
HI ADD Data 1 Data 2 LRC
53SL6000 Instruction Manual Appendix C. Datalink Protocol
C-2
- INSTRUCTION MANUAL 1
- MicroMod Automation, Inc 2
- Table of Contents 3
- 4.0 Functional Overview 4-1 4
- 5.0 Inputs/Outputs (I/O) 5-1 4
- 9.0 Commissioning 9-1 6
- Appendix A: Glossary A-1 7
- Appendix D: Prompt List D-1 7
- List of Tables 8
- List of Figures 9
- Safety Summary 11
- READ FIRST 12
- 1.0 Introduction 13
- 1.2 Controller Model Numbers 15
- 1.3 Product Specifications 15
- Thermocouple List 18
- 2DI/2DO Option Module 18
- CPU Cycle Time 19
- Control Ranges 19
- 2.1 Inspection 20
- 2.2 Site Location 20
- 2.3 Panel Mounting 20
- 2.4 Power Connections 20
- 2.5 Signal Connections 22
- 2.5.4 Analog Output AO1 23
- Signal Wiring 24
- 2.7 2DI/2DO Module 25
- 2.9 Applying Power 26
- 2.9.1 Power-up Sequence 27
- 3.0 Display Panel 28
- 3.4 Operator Mode Overflow/ 31
- Underflow Indication 31
- 3.5 Engineer Mode 32
- Backward 33
- 3.6 Entering a Pass-Key 35
- 3.7 Offline Display Pattern 35
- 3.9 Display Alphanumerics 38
- 3.10 Engineer Mode Summary 38
- 4.0 Functional Overview 40
- 4.2 Detailed Block Diagram 41
- 5.0 Inputs/Outputs (I/O) 45
- Parameter Entries 46
- Table 5-6. RTD Types 47
- 5.4 Analog Output 1 (AO1) 48
- 5.5 Discrete Inputs 49
- 5.6 Discrete Outputs 49
- 6.1 Section Overview 51
- 6.2 Characterizer 51
- 6.2.1. 3SEG Mode 52
- 6.2.2 LSEG Mode 52
- 6.2.3 PrGM Mode 53
- 6.3 Math Function Block 54
- 6.3.1 ALG Mode 55
- 6.3.2 SuMM Mode 55
- 6.3.3 PoLY Mode 56
- 6.3.4 PoWr Mode 56
- 6.3.5 LoG Mode 56
- 6.3.6 LiM Mode 56
- 57
- 7.0 Control Scheme Block 59
- Schemes 64
- Control Scheme 65
- 7.7 Control Loop Parameters 83
- 7.8 Control Scheme Signal 86
- 8.0 Eight Control Strategies 88
- 8.2 Analog Back-Up Control 90
- 8.3 Ratio Control 92
- 8.4 Auto/Manual Selector 94
- Out 95
- 8.4.8 SchM Selection 95
- 8.5.2 AI2 - Primary PV Input 96
- 8.6.1 AI1 - Primary PV Input 98
- 8.7 Dual Indicator with 100
- Re-Transmitted PV 100
- Control 101
- 8.8.3 Speed Factor Adjusting 103
- 9.0 Commissioning 104
- 9.8 Easy-Tune 106
- Actual Curve 107
- Approximated Curve 107
- 9.8.1 Executing Easy-Tune 108
- Appendix A: Glossary 112
- B.1 Overview 118
- B.2 Parts List 118
- B.3 Removal and Replacement 119
- Procedure 120
- B.5 Defaulting the Database 123
- B.6 Analog Input/Output 123
- Calibration Values 123
- B.7 Watchdog LED 123
- C.1 Overview 124
- C.2 Configuring the System 124
- Module for Datalink 124
- C.3 Protocol 124
- C.3.1 Message Types 125
- C.3.2 Transaction Examples 125
- Reference 126
- Cross Reference 128
- Reference 129
- via Datalink 131
- Appendix D: Prompt List 132
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