Function Codes; Setting Data For Operations And Parameters; Enabling Parameter Settings With The Enter Command - Omron 3G3MV-PDRT2 User Manual

Remote I/O Functions
Note 3. The 16-bit data (register number and register data) is set in two words for each setting.
Note 4. Be careful of the order of the leftmost and rightmost bytes of the 16-bit data. The order is
reversed from that of basic and standard remote I/O.

Function Codes

■
The special remote I/O function codes are shown in the following table. Note that they are different
from the explicit message service codes.
Function code (hex)
10
03
00

Setting Data for Operations and Parameters

■
Read data and write data to be set for operations and parameters are calculated as shown below
and then transmitted in hexadecimal.
• Convert to hexadecimal values with the operation/parameter minimum setting value as 1.
• Negative numbers are expressed as two's complements.
• If the original data is already displayed in hexadecimal, it is transmitted as is.
• Set bits that are not used to "0."
• Do not perform data settings for unused registers.
Example 1: Setting a frequency reference of 60 Hz when the minimum setting unit is 0.01 Hz.:
60/0.01 = 6000 → 1770 hex
Example 2 (for 3G3RV/3G3PV/3G3FV Inverters): Setting a frequency reference bias (voltage, ter-
minal 13) of − 50% when the minimum setting unit is 0.1%:
50/0.1 = 500 → 01F4 hex
0 0 0 0 0 0 0 1 1 1 1 1 0 1 0 0
1 1 1 1 1 1 1 0 0 0 0 0 1 0 1 1
1 1 1 1 1 1 1 0 0 0 0 0 1 1 0 0
Example 3: Setting a value of 1F hex in the multi-function input:
Send the value 1F hex.

Enabling Parameter Settings with the ENTER Command

■
Always send an ENTER command when setting (writing) data in parameters. New data written to the
parameters will be enabled as operating data after the Inverter receives the ENTER command. (In
the 3G3MV, the new settings will be enabled after the parameters are received.)
5-16
Data writing
Data reading
No execution (data wrapping only; no internal processing takes place.)
Bit reversal
+1
Content
= FE0C Hex
Chapter 5