User guide

Watlow EZ-ZONE
®
PM PID Controller • 104 • Appendix
1. Acquire either the User Password [pas;u] or the Administrator Password [pas;a].
2. Push the Advance
‰
key one time where the Code [Code] prompt will be visible.
Note:
a. If the the Rolling Password is off push the Advance 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 enter ei-
ther the User or Administrator Password. Once entered, push and hold the Infinity ˆ key for two seconds 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 Infinity ˆ 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
Differences Between a User Without Password,
User With Password and Administrator
- User without a password is restricted by the Locked Access Level [loC;l] .
- A User with a password is restricted by the Read Lockout Security [rloC] never having access to the
Lock Menu [`loC].
- An Administrator is restricted according to the Read Lockout Security [rloC] however, the Administra-
tor has access to the Lock Menu where the Read Lockout can be changed.
Modbus - Using Programmable Memory Blocks
When using the Modbus protocol, 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 document (See Appendix: (Mod-
bus 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
Working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,