Instruction Manual

Logic Functions - Book 1
ANALOG INPUT MODULE BLOCKS (VCIM, TIM, RIM, WRIM)
5-25
5.4 ANALOG INPUT MODULE BLOCKS (VCIM, TIM, RIM, WRIM)
The analog input module blocks serve as the data handling blocks for the analog input
modules. Analog input modules condition the field signals and convert these signals to digital
data in 100 milliseconds. The digital data is requested and processed through an on-board
select circuit which passes the field data between the modules and the blocks using a three
phased 150 millisecond scan cycle for the board. The analog input blocks (VCI, TTI, TI, RI,
RTI and RTTI) are used to determine input filtering, action, normalization, linearization, and
scaling. The relationship between the module blocks and the input function is shown in Figure
5-1. The specific analog input module block types are:
• VCIM Voltage/Current Input Module Block
• TIM Thermocouple Input Module Block
• RIM Resistance Input Module Block (2 Wire)
• WRIM Wide Resistance Input Module Block (3 Wire)
This section describes the analog input module block types and the relationship of their
configuration parameters to the block’s function. All parameters for these blocks are
described in one listing since many of the parameters are the same.