RKC INSTRUMENT COM-JC Manuale delle Istruzioni Scaricare il pdf (Pagina 31)

6. CC-Link COMMUNICATION

IMR01Y06-E6

6.3 Processing of Numeric Data Values

Numeric data values used via communication with the PLC and processed by COM-JC include those

with and without decimal points and also those with minus signs.

z For numeric data value without decimal point

If there is no decimal point, the value is processed as it is.

In parameters which only have ON or OFF status, 1 = ON, 0 = OFF.

[Example]

A signal wire for temperature input is disconnected and the burnout state occurs.

→ Read value corresponding to extension number 63 (comprehensive event state):

1 (Hexadecimal number: 0001H)

z For numeric data value with decimal point

The decimal point is omitted.

[Example]

When the Measured value (PV) of controller (device address 1) is 120.5 °C

→ Read value of Remote register (RWrn) [Measured value (PV) of device address 1]:

1205 (Hexadecimal number: 04B5H)

→ Read value corresponding to extension number 0 [Measured value (PV)]:

1205 (Hexadecimal number: 04B5H)

z For numeric data value with minus sign

The value is expressed as a 2’s complement value which is obtained by subtracting the minus value

from the hexadecimal number 10000H.

[Example]

When the Measured value (PV) of controller (device address 1) is −2.5 °C

→ Read value of Remote register (RWrn) [Measured value (PV) of device address 1]:

Hexadecimal number: FFE7H (10000H − 25 = 10000H − 19H = FFE7H)

→ Read value corresponding to extension number 0 [Measured value (PV)]:

Hexadecimal number: FFE7H (10000H − 25 = 10000H − 19H = FFE7H)

Read data of unused item becomes 0.

Any attempt to write to an unused item is not processed as an error. Data cannot be written

into an unused item.

1 2 ... 26 27 28 29 30 31 32 33 34 35 36 ... 105 106

Nessun commento

RKC INSTRUMENT COM-JC Manuale delle Istruzioni Pagina 31