User guide

<4. Engineering>
4-7
IM 11B06E01-01E
TIP
ThemaximumnumberofASGWconnectionsappliestoPCAS.WhenASGWhasalreadybeenconnectedtotwo
PCASs,itcanacceptupto29analyzers.
l DenitionofMapping
The Modbus address of an analyzer is mapped to ASGW.
Refer to “3.4 Modbus interface tables” for available mapping conditions.
 Format=“#MAP,StnID,ASGW_Address,Target_Address”
#MAP Keyword.Thelinestartfrom“#MAP”isrecognizedasonefordenitionofmapping.
“#STN”needstobedenedrstly.“#MAP”denedbefore“#STN”isdenedcomplains.
StnID StnIDoftheanalyzer(denedin#STN)
ASGW_Address Modbus address of ASGW
Target_Address Modbus address of the target analyzer
Example:“#MAP,3,11001,10001”
The order of line is not restricted, and blank line is ignored.
l Specifying DO output
The alarm status of analyzers is output from the DO terminal of ASGW. Up to 16 points can be
specied.Basedontwopiecesofalarminformation(addresses10001and10002)ofGC1000
which can be read through the Modbus I/F, two statuses are created: ALM_LVL1 and ALM_LVL2.
Either of these statuses can be mapped to the DO terminal of ASGW. At the start-up of ASGW,
both ALM_LVL1 and ALM_LVL2 are OFF.
GC1000
Address 10002: ON
GC1000
Address 10002: OFF
GC1000
Address 10001: ON
ALM_LVL1: keep the last value
ALM_LVL2: keep the last value
ALM_LVL1: OFF
ALM_LVL2: OFF
GC1000
Address 10001: OFF
ALM_LVL1: ON
ALM_LVL2: OFF
ALM_LVL1: OFF
ALM_LVL2: ON
 Format:#DO,StnID,KeyWord,DOnumber
#DO Thekeywordfordefiningthemapping.Alinestartingwith#DOis
recognizedasthelinefordeningthealarmoutputattheDOterminal.
StnID StnIDofananalyzerwhichmonitorsalarms(denedin#STN)
KeyWord EitherALM_LVL1orALM_LVL2isspecied.
DO number The DO number of ASGW from which alarms are output (1 to 16)
Denitionexample:#DO,3,ALM_LVL1,12
l DenitionofAddressCheckingFunction
Address checking function for the coil and holding register to all analyzers is overrode.
 Format=“#ADDR_CHK,OFF”
Set: ON (valid) / OFF (invalid)
*: Defaultsettingis“ON(valid)”.
*: Thesettingfor“#MAP”isvalidonlyafter“#ADDR_CHK”isdened.
 Example:
  #MAP,xxxx,xxxx →Checktarget
  #MAP,xxxx,xxxx →Checktarget
  #ADDR_CHK,OFF
  #MAP,yyyy,yyyy →Exemptfromcheck
  #MAP,yyyy,yyyy →Exemptfromcheck
  #ADDR_CHK,ON
  #MAP,zzzz,zzzz →Checktarget
  #MAP,zzzz,zzzz →Checktarget
4th Edition : Nov. 22, 2011-00