IBM System/7 Functional Characteristics - All about the IBM 1130 ...

The 5012 Multifunction Module Model Al groups the following functions within onephysical enclosure:• As many as 32 analog input points• As many as 128 digital input points• As many as 64 digital output points• One or two analog output points• One 2790 Control for an IBM 2790 Data Communication SystemAny combination of the above functions can be installed in a single multifunctionmodule. Programming support, however, is provided for only four 2790 Controls in aSystem/7 configuration (this includes any 2790 Controls in 5013 Digital I/O Modules).With the single exception that all 2790 Controls must be located within the same 5026Enclosure, the multifunction modules can be located in any or all of the I/O modulepositions within a 5026 Enclosure (location 00 in the 5026 is the processor modulelocation).FUNCTIONAL DESCRIPTIONAnalog Input ControlAn analog input control model B or model C can be used in the multifunction module.Features of these two models correspond to the features of the IBM 5014 Analog InputModule Models B1 and Cl except for the quantity of input points.The analog input control model B consists of an analog-to-digital converter, an amplifier,and a point-select relay multiplexer capable of a maximum scanning speed of 200 pointsper second.As many as 32 two-wire differential analog input points can be accommodated, in eightgroups of four points each.The analog input control model C consists of an analog-to-digital converter, an amplifier,and a differential solid-state multiplexer.The solid-state multiplexer can have as many as 32 two-wire differential analog inputpoints, in eight groups of four points each. With high-level inputs (±5.12V), a scanningspeed of 20,000 points per second can be attained. A scanning speed of 14,000 points persecond can be achieved with low-level inputs (10 to 640 mV). Use of automatic gainselection reduces the scanning speed to a maximum of 7,000 points per second.Digital InputAs many as 128 isolated and/or non-isolated digital input points can be accommodated,in eight groups of 16 points each. Isolated two-terminal inputs can be activated by eithercontact or voltage sources provided by the user's equipment.The first two digital input groups can each be provided with a special feature that permitsthem to interrupt the System/7 processor. A 16-point group is compared with a 16-bit reference register, and interruptions can be initiated on the basis of either an equal oran unequal comparison.A non-isolated digital input group provides 16 latching or non-latching points ofcontact sensing capability. A non-isolated group cannot, however, have the process interruptfeature.Digital Output13-2 GA34-0003As many as 64 isolated and/or non-isolated digital output points can be accommodated, infour groups of 16 points each. Each isolated group can use either of the two optionaldigital output circuits available (medium-power group or contact group). These circuits aredescribed in more detail in the System17 Installation Manual—Physical Planning, Order No.GA34-0004.