VIPA SSM-BG41 - Fig. 3-37: Structure of the Analogue Input Module

Manual BG41/BG42/BG43 Interface modules
Rev. 99/49 3-47
3.2.9 Analogue input (MD40-44) and output module (MD45-49)
3.2.9.1 General
The module for analogue input or analogue output enables the connection of analogue process
interface equipment to the AG-115U, -135U and -155U. They convert the analogue signals with a
resolution of 12 bits into a SPS-CPU digital signal and vice versa. The individual channels are
polled and when requested by the SPS are directly transfered without delay. The interface’s digital
control is electrically decoupled.
The use of analogue modules will be supported from interface building block firmware number
4118V14 on.
The analogue input module possesses 8 inputs, the analogue output module 4 outputs. When using
the module on a SSM-BG43, up to 12 output channels or 24 input channels are available. With a
scanning period of 1 ms per channel, a maximum scanning period of
8 ms is produced by 8 inputs, if all channels are polled.
Fig. 3-37: Structure of the analogue input module
With the analogue output module, an undefined current is issued during the
running up!
The following modules are presently available:
•= MD40 Voltage input 8 channels, single ended, 12 bit, ±10V
•= MD41 Voltage input 8 channels, single ended, 12 bit, ±5V or 0...10V
•= MD42 Voltage input 8 channels, single ended, 12 bit, 0...5V
•= MD43 Voltage input 8 channels, single ended, 12 bit, 0...20 or 4...20mA
•= MD44 Connection from PT100, 4 channel temperature area: -200°C...850°C
•= MD45 Voltage output 4 channels, 12 bit, ±10V
•= MD46 Voltage output 4 channels, 12 bit, ±5V
•= MD47 Voltage output 4 channels, 12 bit, 0...10V
•= MD48 Voltage output 4 channels, 12 bit, 0...5V
•= MD49 Current output 4 channels, 12 bit 0...20 or 4...20 mA