Watlow CLS200, MLS300 and CAS200 Bedienungsanleitung PDF herunterladen (Seite 92)

86 Communications Speciﬁcation

Glossary

Set, bit See Cleared, bit.

Single-bit

error

An error in which only one bit is incorrect.

Stop bit The last part of a character that assures that the next start element is rec-

ognized.

STX Start Text. A control code that signals the beginning of a transmission.

TI Time of Integral, or Reset. The parameter that users alter to set the inte-

gral control action, expressed in seconds per repeat.

TD Derivative term, or Rate. The parameter that users alter to set the deriva-

tive control action, expressed in seconds.

1 2 ... 87 88 89 90 91 92

CLS200, MLS300 1
Communications 1
Speciﬁcation 1
Warranty 2
Contents 3
Protocol Syntax 9
Transaction Sequence 10
Packet Format 12
Codes in a Packet 12
Error Checking 14
Cyclic Redundancy Check (CRC) 15
Examples 16
Block Write 19
Message Data 20
Data for a Write Command 21
Two-Byte Data Types 21
Figuring Block Size 21
Anafaze/AB Data Table Summary 22
Number Description 24
Address 24
Type Number of Bytes 24
Overview 27
The Query-Response Cycle 28
Serial Transmission 28
Message Framing 29
Contents of the Data Field 30
CRC Error Checking 31
Function Codes 32
Diagnostic Subfunctions 33
Writing Data 36
Reading Data 36
Write Examples 38
Modbus-RTU Data Table Summary 39
Chapter 3: 45
All Units 17, 18 47
Enhanced Features options 49
Parameters (by number) 51
Input Type (3) 52
Output Type (4) 53
Setpoint (5) 54
Process Variable (6) 54
Output Filter (7) 54
Output Value (8) 55
Alarm Deadband (12) 55
Alarm_Status (13) 56
Ambient Sensor Readings (15) 58
Pulse Sample Time (16) 58
High Process Variable (17) 58
Low Process Variable (18) 58
Precision (19) 59
Cycle Time (20) 60
Zero Calibration (21) 60
Full Scale Calibration (22) 60
Digital Inputs (25) 60
Digital Outputs (26) 61
Override Digital Input (28) 61
Override Polarity (29) 61
System Status (30) 62
System Command Register (31) 62
Data Changed Register (32) 63
Input Units (33) 63
EPROM Version Code (34) 64
Options Register (35) 64
High Reading (37) 65
Low Reading (38) 65
Heat/Cool Spread (39) 65
Startup Alarm Delay (40) 66
• Range: See tables below 67
• Default: 0 67
Current Segment (47) 68
Segment Time Remaining (48) 68
Current Cycle Number (49) 68
Tolerance Alarm Time (50) 68
Last Segment (51) 68
Number of Cycles (52) 69
Ready Setpoint (53) 69
Ready Event States (54) 69
Segment Setpoint (55) 70
Segment Time (58) 72
Tolerance (59) 72
Ramp/Soak Flags (60) 72
Output Limit (61) 73
Output Limit Time (62) 73
Alarm_Control (63) 74
Alarm_Acknowledge (64) 74
Alarm_Mask (65) 74
Alarm_Enable (66) 74
AIM Fail Output (68) 75
Output Linearity Curve (69) 76
SDAC Mode (70) 76
SDAC Low Value (71) 76
SDAC High Value (72) 76
Save Setup to Job (73) 77
Input Filter (74) 77
Loop Alarm Delay (75) 77
Loop Names (77) 77
Channel Name (78) 78
Manufacturing Test (80) 78
Cascade Maximum Setpoint (89) 80
Cascade Base Setpoint (87) 80
Cascade Minimum Setpoint (88) 80
Loop Status (96) 82
Output Type/Disable (97) 82
Output Reverse/Direct (98) 82
Controller Type (99) 83
Ramp/Soak Proﬁle Number (100) 83
Controller Address (101) 83
Baud Rate (102) 83
Ready Events (103) 84
Appendix A: 85
Communications Driver 85
Close_Comm_Port() 86
DownLoad() 86
UpLoad() 87
Glossary 89

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