System 50 System 50 CONTROLLERS MicroDAC LT (Optomux) FEATURES • Each Unit Controls/Monitors up to 32 Analog (G5 Only) and/or Digital I/O Modules • Executes On-Board Programs Created With Borland C • Network up to 64 MicroDAC LTs per Host Serial Port, Spanning as Much as 4000 Feet • Communicate Over RS-422 /485 at Speeds From 1200 Baud to 115.2 KB • 100% Optomux Compatible, With Expanded Command Set • I/O Update Rates of 500 µSec per 32 Digital I/O, and 10 mS per Analog Input or 2 Analog Outputs • 64-Bit Floating Point Math APPLICATIONS and control the outputs. In addition to simple Even while an Embedded Control Program ON/OFF instructions, commands are included (ECP) is running on MicroDAC LT, any ™ which permit you to: Optomux command it receives from the host • Sample analog signals at 10 mS per input will be processed as usual, which allows you to • Flag values above or below prescribed levels delegate some or all of the control and data • Capture min/max values acquisition responsibility from the host computer. • Calculate the average input signal levels This reduces communications time and • Provide linearized thermocouple and improves system response. RTD temperature values • Determine the width of input pulses For embedded or stand-alone applications, • Count pulses at frequencies up to 1000Hz downloaded ECP routines can be initiated on • Detect rising or falling edges power-up. • Latch momentary input events • Set the level of analog outputs Libraries and the appropriate download utility • Provide delayed-on or delayed-off outputs are included with the ECP Programmers GENERAL DESCRIPTION Manual. MicroDAC LT is a low cost version of MicroDAC for customers who don't need all of the features COMMUNICATIONS of MicroDAC. Missing are the battery back-up The host computer and MicroDAC LT(s) SOFTWARE for the RAM memory, real-time clock, RS-232, communicate serially over one or two pair of Software drivers are available which simplify and SBX ports. The DIN Rail Mountable metal twisted wires per RS-422/485 in a multi-drop the task of interfacing host programs written in. ™ enclosure is optional. ECP routines written for configuration. They use Optomux ASCII Visual Basic or C to the MicroDAC network. MicroDAC can be easily transferred to format to code the command and the response Sample programs, set-up and debug utilities MicroDAC LT and vice versa. By combining messages. Application programs running on are included on the disk with the drivers. MicroDAC, MicroDAC LT and ProMux the the host computer issue commands and then Interface drivers for most third party software cost/performance of a distributed control or await responses from the MicroDAC. The packages are available through their data acquisition network is optimized for price communications speed is selectable between distributors. Our MicroDAC DDE Server and performance. 1.2 and 115.2 KBaud. Each controller on the dramatically simplifies data sharing between network is assigned a unique base address. MicroDACs and Windows applications, such The entire network can span 4000 feet. ANALOG & DIGITAL I/O as Microsoft Excel (see Controller Software). MicroDAC LT connects directly to any 8,16,24, Our DLL will assist you in building custom or 32 module mounting rack with a 50-pin EMBEDDED CONTROL PROGRAMS Windows Man-Machine Interfaces or control ++ header. If connected to a G5 rack, any By specifying MicroDAC LT(s) with the optional programs using Visual Basic, Visual C/C , or combination of analog and digital I/O modules 64KB of flash memory, you can develop and Borland compilers. may be used. Standard and Mini racks permit download C language programs to any of the 1 With optional enclosure. only a combination of digital modules. MicroDAC networked controllers. LTs can be networked to a host PC which execute programs that monitor the input signals System 50 31 Grayhill, Inc. • 561 Hillgrove Avenue • LaGrange, Illinois 60525-5997 • USA • Phone: 708-354-1040 • Fax: 708-354-2820 • www.grayhill.com System 50 System 50 DIMENSIONS In inches (and millimeters) STANDOFF I.D. 0.15 (3,8) DIA. 4.975 0.725 CLEARANCE (18,42) (126,37) FOR #6 SCREW ATTACHES TO 35 MM DIN RAIL EN50022 +5V GND 3.000 FH+ 4.25 2.80 (76,2) FH- (107,95) (71,12) TH+ TH- FO+ FO- TO+ TO- .758 0.725 0.20 (19,25) (18,42) .758 (5,08) (19,25) 4.875 0.625 (123,83) (15,88) 1.385 (35,18) 2.20 PLUG CONNECTOR (55,9) MATES DIRECTLY WITH A RACK Unless otherwise specified, tolerances are ± .010 (0,25). SPECIFICATIONS ORDERING INFORMATION Power Supply: 4.75 to 5.25 Vdc Part Number Description Supply Current (less modules): 300 mA Operating Temperature: 0 to 70°C MicroDAC LT Controllers Humidity: 95% non-condensing Microprocessor: V25 @ 10 MHz 72-MDL-32ADC Analog/Digital with 64K flash for C ECP storage Housing Material: Painted steel Connections: MicroDAC LT User's Manuals and Software RS-422/485: 10 position terminal block 72-UMM Introduction to MicroDAC Rack: 50-pin female plug 72-UMM-D Driver development and protocol definition. Includes driver source code Serial Data: Format: 10-Bit ASCII, 1 Start, 1 Stop, 8 Data 72-UMM-DDE Optomux DDE Server for Windows 3.1 72-UMM-DLL Optomux DLL for Windows 3.1 Integrity: Message Checksum or 4 Pass + CS Range of Network: Compliant with EIA/TIA 72-UMM-DLL32 Optomux DLL for Windows 95/98/NT 72-UMM-E C language ECP manual with libraries RS485-A (1 standard load per controller). 72-UMM-H Programmers manual with Basic and C host drivers & examples Operates in multi-drop mode. 64 DIP switch selectable addresses. May require RS485 72-UMM-IL Hardware installation and set-up. Includes set-up and debug programs repeaters for lengths over 4000 feet or more than 32 controllers. Consult factory for special Available from your local authorized Gray- For prices and discounts, contact your local configurations. hill Distributor. sales office, an authorized Distributor, or Grayhill. System 50 Grayhill, Inc. • 561 Hillgrove Avenue • LaGrange, Illinois 60525-5997 • USA • Phone: 708-354-1040 • Fax: 708-354-2820 • www.grayhill.com 32