Instruction manual

7. COMMUNICATION DATA LIST
IMR01Y06-E6 45
7.2 Remote Register
Remote registers (RWr, RWw) are numeric data.
“n” in the table is the address assigned to the master station by the station number setting.
It can be calculated by the following equation. However, the computing equation is when a network is
configured only by using our COM-JCs and the number of all Occupied station/Extended cyclic are at
the same setting.
Number of Occupied station
/
Extended cyclic setting
Equation
1 station occupied 1 time n = (Station number*
−
1) × 4
4 stations occupied 1 time n = (Station number*
−
1) × 4
4 stations occupied 2 times n = (Station number*
−
1) × 8
* Station number when there is one occupied station: 1 to 64 (each number can be set)
Station number when there are four occupied stations: 1 to 61
(Four stations are occupied for each station
number, and thus only numbers that are
increments of four can be set: 1, 5, 9 …61)
As the calculation result is expressed in decimal number it is converted to hexadecimal number
before substituted for “n” in the table.
Example: When the COM-JC is set to 4 stations occupied 1 time and its station number is 5.
n = (5 − 1) × 4 = 16 (Decimal number) → 10 (Hexadecimal number)
For station number 5: Remote registers RWrn to RWrn+F → RWr10 to RWr1F
RWwn to RWwn+F → RWw10 to RWw1F
If the network consists of COM-JC modules with differing Number of Occupied station/
Extended cyclic settings, use for “n” the total of the number of assigned registers with station
number lower than the module’s own station in order from the lowest station number.
Number of Occupied station
/
Extended cyclic setting
Number of assigned registers
1 station occupied 1 time 4H (Hexadecimal number)
4 stations occupied 1 time 10H (Hexadecimal number)
4 stations occupied 2 times 20H (Hexadecimal number)
Example: Calculation of “n” when the network consists of three COM-JC modules and the
station numbers and Number of Occupied station/Extended cyclic settings are as
shown below.
1st module [Station number 1]: 4 stations occupied 2 times
n = 0 (No station numbers less than the module’s own station, thus 0)
Remote registers RWrn to RWrn+1F → RWr0 to RWr1F
RWwn to RWwn+1F → RWw0 to RWw1F
2nd module [Station number 5]: 1 station occupied 1 time
n = 20 (The number of assigned registers of station 1)
Remote registers RWrn to RWrn+3 → RWr20 to RWr23
RWwn to RWwn+3 → RWw20 to RWw23
3rd module [Station number 6]: 4 stations occupied 2 times
n = 20 + 4 = 24 (Total number of assigned registers of station 1 and station 5)
Remote registers RWrn to RWrn+F → RWr24 to RWr33
RWwn to RWwn+F → RWw24 to RWw33
“Device address from 1 to 31” in the table correspond to controller device address.