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INM MTL 130-0200 Rev 4

13

COMMUNICATION PROTOCOL

Communication parameters are 9600 Baud, 8 bits, no parity, 1 stop bit and no handshaking. The
instrument is DTE. The general form of the protocol is:

 

1.   The protocol is a single command and response protocol. 

 

2.   A command consists of an “address” and an “action”. A received valid address is  

 

 

always responded to even if the action is invalid. Commands must be single you cannot  

 

 

send multiple commands without awaiting a response.

 

3.   A Response consists of a “tag” and “data”. 

 

4.   A command message can not be more than 30 characters without message terminator  

 

 

(<CR><LF>). Exceeding this length will result in an error 90. response

 

5.   A response message can not be more than 30 characters without message terminator  

 

 

(<CR><LF>). Exceeding this length will be assumed to be a communications error.   

 

6.   A command message timeout is defined as 10 seconds. This is the maximum time  

 

 

from a valid address “Ax” to the message terminator (<CR><LF>). 

 

 

This time is long to allow keypad entry (i.e. HyperTerminal)

 

7.   The response message failure to respond timeout is defined as 300 milliseconds. This  

 

 

is the maximum time from a valid command message terminator (<CR><LF>). Until  

 

 

the first character of the response. 

 

8.   A response message line maximum duration is defined as 1 second. This is the  

 

 

maximum time from the first valid response character to the line message terminator  

  (<CR><LF>). 

 

 

9.   A response message maximum duration is defined as 3 second. This is the maximum  

 

 

time from the first valid response character to the last message terminator  

 

 

(<CR><LF>).  This is to allow multiple line responses. No card response can hold the  

 

 

bus for more than 3 seconds. Factory commands are the only exception

 

10.  exceptions to 7,8,9

 

 

 

•   Starting up: The card start up is defined as taking up to 10 seconds. The card  

 

 

 

 

will then assert an error “97” in R1, R4 and R5 on the first reading after the 10  

 

 

 

 

second period. Subsequent readings will show the correct values.  

 

 

 

•   Calibration exemption from paragraph 7 and 8 but must comply with paragraph 9.

The general form of the response is:

 

1.  Read whole group: ‘AxP0’ where x is the network address of the unit. The unit will  

 

 

respond when x is its own address or 0 (any unit responds to address 0), otherwise it  

 

 

will not respond at all. If No Zero Param bit in sysflags is set, ‘AxP’ OR ‘AxP0’ to send all.

 

2.  Read specific group item: ‘AxPy’ where y is the line (or item) number

 

3.  Write specific group item: ‘AxPy=<new value>. The format and (where appropriate)  

 

 

precision of the new value is as it is displayed. With the ‘verbose’ flag cleared: Py  

  itemname=value 

unit

 

4.   With the ‘verbose’ flag set: Py =value

 

5.   A read command will return 0 when it has no value to report  

 

 

(e.g. A0E6 returns A0E6=0)

 

6.   A ‘do now’ write command (e.g. clear logs ‘E6’) will do nothing if set with a 0 as  

 

 

argument, will execute with a 1 as an argument and will ?93 any other argument.  

 

 

A ‘do now’ write command returns 0 for fail and 1 for success.  

 

 

E.g. A0E6=1 returns A0E6=1

Содержание Crouse-Hinds Z130

Страница 1: ...Z130 MTL zirconia oxygen analyser February 2017 INM MTL 130 0200 Rev 4 Instruction manual MTL gas analysers systems...

Страница 2: ...LARATION OF CONFORMITY A printed version of the Declaration of Conformity has been provided separately within the original shipment of goods However you can find a copy of the latest version at http w...

Страница 3: ...3 2 18 Enclosure details 3 3 INSTALLATION 4 3 1 Unpacking and visual checking 4 3 2 Calibration overview 4 3 3 Sample 4 3 3 1 Key requirements 4 3 3 2 General advice Sample 5 3 3 3 Measuring low leve...

Страница 4: ...iv INM MTL 130 0200 Rev 4 THIS PAGE IS LEFT INTENTIONALLY BLANK...

Страница 5: ...labelling Normal relates to process normal and not the electrical rest position of the relays In process normal the relays are energised 1 2 Manual symbols The following methods are used in this manua...

Страница 6: ...pm 0ppm to 9 9ppm 0 1ppm 2 5 Stability Better than 2 of reading or 0 5ppm month whichever is greater 2 6 Sample flow Between 100 and 500 ml min for optimum operation 2 7 Speed of response T 90 less th...

Страница 7: ...programmable for Mode HIGH LOW or OFF Level full range of instrument Hysteresis 0 to 10 of set point Volt free C O contacts rated at 48v 0 5A AC or DC normally energised 2 14 Serial Communication Por...

Страница 8: ...FLAMMABLE MIXTURES ARE ALLOWED TO COME INTO CONTACT WITH THE MEASURING CELL AS THIS MAY CAUSE IGNITION OF THE GAS GASES CONTAINING HALOGENS SULPHUR OR SILICON MUST BE AVOIDED IT IS THE RESPONSIBILITY...

Страница 9: ...und joints and couplings When measuring concentrations of less than 500ppm oxygen very small leakages can noticeably affect the readings for ppm concentrations the piping must be of hard plastic or me...

Страница 10: ...ent 2 2 3 TX Data transmitted from instrument 3 3 2 3 4 3 Alarm and Analogue Output connections See figure 2 CAUTION The recommended cable used for external connection is double insulated WARNING Alth...

Страница 11: ...the same principle use the or arrows to scroll through the parameters By pressing Edit and the x in the xP nnnn will flash then using the or arrows to edit the value Pressing Edit saves change while E...

Страница 12: ...8 INM MTL 130 0200 Rev 4 Figure 3 130 series menu...

Страница 13: ...imately the same oxygen concentration as the normal sample As with most instruments of this type it is important to have a reasonable concentration difference between the two calibration points For th...

Страница 14: ...rect level then press the Edit button to store the calibration setting or Cal to cancel To return the unit to measuring mode press and release the Cal button otherwise the or arrows until the display...

Страница 15: ...o be adequate WARNING Opening the analyser case will expose you to mains voltage Disconnect the analyser from the mains supply and any potentially hazardous process wiring before opening the case 6 1...

Страница 16: ...d by the Nernst equation Cell output 2 303RT log P1 4F P2 where R molar gas constant T absolute temperature of cell in K F Faraday constant P1 partial pressure of oxygen in the reference air in most c...

Страница 17: ...age terminator CR LF 9 A response message maximum duration is defined as 3 second This is the maximum time from the first valid response character to the last message terminator CR LF This is to allow...

Страница 18: ...w counts D4 ADC 1 12345cts D4 12345 ADC raw counts D3 Sens 3 N A D3 0 N A D2 Sens 2 11 56mV D2 11 56 Thermocouple mV D1 Sens 1 11 55mV D1 11 55 Oxygen cell mV AxEy Error logs read only except E9 E9 Cl...

Страница 19: ...Conc 5 00 R1 5 00 Instrument range and resolution Measure and Concentration Notes on readings In over range condition 110 of instrument span xxxxx will be e g R1 Conc Similarly in under range conditio...

Страница 20: ...legal for this board 71 79 CRC error NVRAM errors Error 71 user parameters CRC error if this area is restored user calibration etc is LOST Error 71 will be reported in response to ANY read request unt...

Страница 21: ...INM MTL 130 0200 Rev 4 17 THIS PAGE IS LEFT INTENTIONALLY BLANK...

Страница 22: ...18 INM MTL 130 0200 Rev 4 THIS PAGE IS LEFT INTENTIONALLY BLANK...

Страница 23: ...INM MTL 130 0200 Rev 4 19 THIS PAGE IS LEFT INTENTIONALLY BLANK...

Страница 24: ...rozavodskaya Str 33 Building 4 Moscow 107076 Russia Tel 7 495 981 3770 Fax 7 495 981 3771 E mail mtlrussia eaton com SINGAPORE Cooper Crouse Hinds Pte Ltd No 2 Serangoon North Avenue 5 06 01 Fu Yu Bui...

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