Instruction Manual

Watlow EZ-ZONE
®
PM Limit Controller • 81 • Chapter 8 Features
Note:
a. If the the Rolling Password is off push the Ad-vance key one more time where the Password [pass]
prompt will be displayed. Proceed to either step 7a or 8a. Pushing the Up ¿ orDown¯ arrow keys en-
ter either the User or Administrator Password. Once entered, push and hold the Reset
RESET
key for two sec-
onds to return to the Home Page.
b. If the Rolling Password [roll]wasturnedonproceedonthroughsteps3-9.
3. AssumingtheCode[Code] prompt (Public Key) is still visible on the face of the control simply push the
Advance key
‰
to proceed to the Password [pass] prompt. If not find your way back to the Factory Page
as described above.
4. Execute the calculation defined below (7b or 8b) for either the User or Administrator.
5. Enter the result of the calculation in the upper display play by using the Up ¿andDown¯ arrow keys or
use EZ-ZONE Confgurator Software.
6. Exit the Factory Page by pushing and holding the Reset
RESET
key for two seconds.
Formulas used by the User and the Administrator to calculate the Password follows:
Passwords equal:
7. User
a. If Rolling Password [roll] is Off, Password [pass] equals User Password [pas;u].
b. If Rolling Password [roll] is On, Password [pass] equals: ([pas;u] x code) Mod 929 + 70
8. Administrator
a. If Rolling Password [roll] is Off, Password [pass] equals User Password [pas;a].
b. If Rolling Password [roll] is On, Password [pass] equals: ([pas;a]xcode)Mod997+1000
Modbus - Using Programmable Memory Blocks
When using the Modbus RTU or Modbus TCP protocols, the PM control features a block of addresses that can
be configured by the user to provide direct access to a list of 40 user configured parameters. This allows the
user easy access to this customized list by reading from or writing to a contiguous block of registers.
To acquire a better understanding of the tables found in the back of this manual (See Appendix: (Modbus
Programmable Memory Blocks) please read through the text below which defines the column headers used.
Assembly Definition Addresses
- Fixed addresses used to define the parameter that will be stored in the "Working Addresses", which may
also be referred to as a pointer. The value stored in these addresses will reflect (point to) the Modbus ad-
dress of a parameter within the ST control.
Assembly Working Addresses
- Fixedaddressesdirectlyrelatedtotheirassociated"AssemblyDefinitionAddresses"(i.e.,AssemblyWork-
ingAddresses200&201willassumetheparameterpointedtobyAssemblyDefinitionAddresses40&
41).
WhentheModbusaddressofatargetparameterisstoredinan"AssemblyDefinitionAddress"itscorre-
sponding working address will return that parameter’s actual value. If it’s a writable parameter, writing to
its working register will change the parameter’s actual value.
Asanexample,Modbusregister360containstheAnalogInput1ProcessValue(SeeOperationsPage,
AnalogInputMenu).Ifthevalue360isloadedintoAssemblyDefinitionAddress91,theprocessvaluesensed
byanaloginput1willalsobestoredinModbusregisters250and251.Notethatbydefaultthisparameteris
alsostoredinworkingregisters240and241aswell.
 Thetable(SeeAppendix:ModbusProgrammableMemoryBlocks)identifiedas"AssemblyDefinitionAd-
dresses and Assembly Working Addresses" reflects the assemblies and their associated addresses.