Chapter 1 Functions; Modes - Mitsubishi Electric MELSEC iQ-R User Manual

1
FUNCTIONS
This chapter describes the functions of the A/D converter module and the setting procedures for those functions. For details
on the I/O signals and the buffer memory, refer to the following.
Page 168 I/O Signals
Page 179 Buffer Memory Areas
• This chapter describes I/O signals and buffer memory addresses for CH1. For details on the I/O signals and
buffer memory addresses for CH2 and later, refer to the following.
Page 168 List of I/O signals
Page 179 List of buffer memory addresses
• Numerical values come in  and  of the error codes and alarm codes described in this chapter. 
indicates the channel where an error has occurred and  indicates details of the error. For details on the
numerical values, refer to the following.
Page 159 List of Error Codes
Page 165 List of Alarm Codes
1.1

Modes

The A/D converter module has the normal mode, simultaneous conversion mode, inter-module synchronization mode, and
offset/gain setting mode. Change the mode according to the function used.
Normal mode
The normal A/D conversion is performed in this mode. Use the normal mode (high speed: 1s/CH), the normal mode (medium
speed: 10s/CH), or the normal mode (low speed: 20s/CH) for each sampling cycle. In this manual, the description of
"normal mode" indicates the normal mode (high speed: 1s/CH), normal mode (medium speed: 10s/CH), and normal mode
(low speed: 20s/CH).
Simultaneous conversion mode
The A/D conversion is performed simultaneously in all channels. The sampling cycle is fixed to 5s/4CH.
Inter-module synchronization mode
The A/D conversion is performed at the inter-module synchronization cycle in this mode.
Offset/gain setting mode
The mode for the offset/gain setting.
For details on the offset/gain setting, refer to the following.
 MELSEC iQ-R High Speed Analog-Digital Converter Module User's Manual (Startup)
1
1 FUNCTIONS
15
1.1 Modes