11.22 Built-in Option Card Types and Ports in Which They Can be Installed
11-110
Connection example
Table 11.22-27
* The maximum permissible MEGA unit [PLC]
terminal current is 100 mA
Function code settings
1. If setting the frequency
To enable frequency setting input from this interface card, it is necessary to set “11” (digital input interface) for
function code F01 (frequency setting 1) or C30 (frequency setting 2). Furthermore, the frequency setting polarity
and input mode are set with function code o19 (DI polarity selection) and o20 (DI mode selection).
The data for each bit is “0” when terminal input is OFF, and “1” when terminal input is ON.
Table 11.22-28
Terminal function and description of setting content
8-bit binary
frequency setting
Set resolution = Maximum output frequency x (1/255)
12-bit binary
frequency setting
Set resolution = Maximum output frequency x (1/4095)
15-bit binary
frequency setting
Set resolution = Maximum output frequency x (1/32767)
16-bit binary
frequency setting
Set resolution = Maximum output frequency x (1/65535)
BCD, 4 digits
Frequency setting
(0 to 99.99 Hz)
The frequency can be set in the 0 to 99.99 Hz (set resolution =
0.01 Hz) range.
If a value equal to or higher than the maximum output
frequency is entered, the value is restricted to the maximum
output frequency.
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