Yokogawa DA100 Manuel d'utilisateur Page 24
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Noté. / 5. Basé sur avis des utilisateurs
IM DA100-11E
3-5
Overview and Specifications of RS-422-A/RS-485 Interface
3
In the case of two-wire system
Connect send and receive terminals with the same signal polarity on the terminal arrangement of the
RS-422-A/RS-485 module. Only two wires are used in connecting to other units.
Terminator (externally applied) 120 ohm, more than 1/2 W
#1
No terminators are inserted between #1 through #n-1 (internal OFF)
RS-422-A/RS-485
module
of the DA100/DR
#2 #n
(#n≤31)
Terminator (Internal ON)
Host
Computer
SG
RDB( + )
RDA( - )
SDB( + )
SDA( - )
FG
SG
RD B
RD A
SD B
SD A
(SG)
(B)
(A)
(B)
(A)
FG
SG
RD B
RD A
SD B
SD A
(SG)
FG
SG
RD B
RD A
SD B
SD A
(SG)
(B)
(A)
(Diagram below shows the case when the port of the host computer is RS-232-C)
Terminator (externally applied) 120 ohm, more than 1/2 W
#1
No terminators are inserted between #1 through #n-1 (internal OFF)
RS-422-A/RS-485
module
of the DA100/DR
#2 #n
(#n≤31)
Terminator (Internal ON)
FG
SG
RD B
RD A
SD B
SD A
(SG)
(B)
(A)
(B)
(A)
FG
SG
RD B
RD A
SD B
SD A
(SG)
FG
SG
RD B
RD A
SD B
SD A
(SG)
(B)
(A)
SHIELD
RD( + )
RD( - )
TD( + )
TD( - )
Host
Computer
Converter
Z - 101HE
(SHARP)
RS-232-C
Note
• The method in eliminating noise depends on the condition in which it is used. In the example, shielded cable is grounded
only at the DA100 (one-sided grounding). This method is effective in eliminating noise in long distance communication in
which there is potential difference between the ground of the PC and the ground of the DA100. When there is no potential
difference between the ground of the PC and the ground of the DA100, grounding both sides (two-sided grounding) is
sometimes effective. In addition, there are cases when grounding both sides with one side having a capacitor connected in
series is effective.
Consider all the above cases in eliminating the noise.
3.3 RS-422-A/RS-485 Interface Connection
- Instruction 1
- Data Acquisition Unit 1
- Communication Interface 1
- Introduction 2
- Trademark 2
- TABLE OF CONTENTS 4
- CHAPTER 7 OUTPUT FORMAT 5
- CHAPTER 8 SAMPLE PROGRAM 5
- APPENDIX 6
- Rotary switch with 9
- Address is the numeral 9
- 1.3 Specifications 10
- Listener and Talker Functions 11
- Status Byte Format 12
- 2.2 Specifications 13
- Host Computer 14
- 2.5 Communication Data Format 18
- 3.2 Specifications 21
- Cable Used 22
- Connecting the Cable 22
- Converter 25
- Terminator 25
- Minimum Response Time 26
- 3.4 Communication Data Format 27
- Procedure 28
- Connecting to the Network 30
- About the Ports 30
- Communication Operation 31
- 4.2 Specifications 32
- Setting the Dip Switch 33
- LED Indication 33
- 4.4 Setting the IP Address 35
- 4.5 Connection Methods 36
- DA100's IP address 41
- <Enter> 41
- 4.9 Setting the Timeout 42
- 5.1 Command Format 43
- 5.2 Command Syntax 45
- Channel/relay No 46
- 5.4 Command List 47
- 5.5 Input Range Parameter 48
- RATE RATE 0 to 30000 50
- GATE GATE 0 to 30000 50
- Command Format 51
- 5.5 Input Range Parameter 51
- 5.6 ASCII Code Table 52
- 6.1 Setting Command 53
- 6.1 Setting Command 54
- Setting the strain input 54
- Setting the pulse input 54
- Setting Scaling 54
- SN Sets the scaling unit 55
- SA Sets the alarm 55
- SL Sets an event/action 57
- Commands 59
- XT Sets the temperature unit 61
- 6.2 Control Execution 62
- 6.3 Data Output 64
- Request Command 64
- 7.1 Functions as Talker 66
- Expandable model: A01 to A60 67
- Position 71
- 7.9 Report Output Format 74
- Daily Report 76
- 7.9 Report Output Format 77
- Monthly Report 78
- 8.1 GP-IB Sample Programs 82
- 8.2 RS-232-C Sample Programs 85
- Output the Setting Data 88
- Sample Program 90
- 8.4 Ethernet Program 94
- App.1 Computing Equation 96
- Computation start 98
- Computation stop 98
- Computation clear & start 98
- Computed data 98
- Measurement interval 99
- Computation 99
- App. 2 Report Function 100
- IM DA100-11E 101
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