The MicroLogix 1200 did include the same Mini-Din RS-232 serial port for communications and porgramming (aka COMM 0) as the MicroLogix 10 base. This was unlike SLC-500 I/O modules for which you had to choose either sinking or sourcing. But, unlike the MicroLogix 1000, the MicroLogix 1200 came equipped with removable terminal blocks and wiring labels. It was also very likely a nod to the fact that by the year 2000 the use of personal computers for programming automation devices had become commonplace in manufacturing.Īs with the MicroLogix 1000, the MicroLogix 1200’s DC Input models supported either sinking or sourcing inputs. This was likely done to allow for the addition of many advanced features which the handheld didn’t support.

The 1200 was programmed with the same Windows based RSLogix 500 software (version 4.0 or greater) that programmed the SLC-500, MicroLogix 10, but it could not be programmed with the MicroLogix 1000’s Hand Held Programming Terminal. This was very similar to the older SLC-100 and SLC-150 expansion I/O, but the 1200’s I/O was considerably smaller. Unlike SLC-500 fixed units, the MicroLogix 1200’s expansion I/O was rackless, and interconnected by use of short ribbon cables. But unlike the MicroLogix 1000, the MicroLogix 1200 supported from three to six 1762 expansion modules, the actual number depending on power consumption of the modules chosen. The 1200 was released in two I/O sizes: 24 and 40. This new MicroLogix represented the lower end of Allen-Bradley’s second generation of Micro hardware, with the MicroLogix 1500 representing the higher end. In the year 2000, six years after the MicroLogix 1000 launch and one year after the launch of the MicroLogix 1500, the MicroLogix 1200 was released into the market.

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