IC693PCM300

GE-IP | 9030 | GE Fanuc 90-30 GE-IP PLC

IC693PCM300 Image

IC693PCM300

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  • Manufacturer: GE-IP
  • Description: 160 KB
  • Weight: 1 lbs :: ≈ 1 kgs
  • Warranty: 1 Years
  • Product Revisions Available:
  • Other Available Revisions of the IC693PCM300 : A, B, C, D, E, F, G, H, I, J, K, L, M, N, O, P, Q, R, S, T, U, V, W, X, Y, Z,

Product Manual Excerpt

The serial connectors on the PCM are used to communicate with external devices, such as operator interface terminals, bar code readers, and programming devices. The Series 90-70 PCM has two serial connectors; each one supports both RS-232 and RS-485 operation. The serial ports are identical, and either port can be used for most applications. The two ports are configurable for different communication parameters. Note RS-485 is basically compatible with RS-422 devices. Series 90-30 PCMs have a single serial connector that supports two ports. One port has a fixed interface. Port 1 uses RS-232 operation only. The 160K PCM, IC693PCM300 is restricted to using RS-485 on port 2. All other Series 90-30 PCM modules may select either RS-232 or RS-485 operation on port 2. Caution The serial ports on almost all versions of the PCM are connected to electrical ground within the PLC. Serial communication must be limited to distances of 50 feet (15 meters) unless ground isolation is provided by an external device. Failure to observe this caution may result in damage to the PCM or communicating device. The serial ports on Series 90-70 PCMs using PCMA3 or newer hardware have limited isolation from electrical ground. These ports can withstand 200 volts DC plus instantaneous peak AC between any serial port connector pin (except shield) and PLC frame ground. This level of isolation is not adequate for many applications, for example, communication between devices on different power systems or where serial cables are exposed to intense electromagnetic fields. For applications like these, an external optical isolation device should be installed in the serial connection. A WYE cable is supplied with each Series 90-30 PCM. The purpose of the WYE cable is to separate the two ports from a single physical connector; i.e., the cable separates the signals. In addition, the WYE cable makes cables used with the Series 90-70 PCM fully compatible with the Series 90-30 PCM. The WYE cable is 1 foot in length and has a right-angle connector on one end that connects to the PCM. On the other end, it has a dual connector with one connector for port 1 and the other for port 2. In order to use an RS-232 cable on port 2 of a Series 90-30 PCM, either a special cable must be made according to the serial port pin assignments shown in appendix A or a WYE cable must be used. Standard Series 90-70 PCM cables can be used for the Series 90-30 PCM when the WYE cable is used. 1 1-8 Series 90 Programmable Coprocessor Module and Support Software User s Manual November 1999 GFK-0255K Caution The WYE cable should not be used with Series 90-30 PCMs connected to an RS-485 multidrop network because it introduces signal reflections on the cable. Multidrop networks should be cabled directly to the PCM serial connector. The connector pin assignments for the Series 90-70 PCM, Series 90-30 PCM, and the WYE cable shipped with each Series 90-30 PCM are shown in appendix A, PCM Cabling Information. 1 GFK-0255K Chapter 1 Introduction 1-9 Section 4: Hardware Overview for the Series 90-70 PCM The Series 90-70 PCM features include: A 12.5 mHz 80C186 microprocessor. 128 Kbytes on-board RAM. Up to 512 Kbytes optional RAM on memory expansion boards. These are the same expansion boards used by the Series 90-70 CPU 731/32 and CPU 771/772. Two RS-232/RS-485 serial ports. Backplane access to PLC memory. A real-time calendar clock synchronized to the PLC. A Restart/Reset pushbutton. Three status LEDs. Soft configuration (no dip switches or jumpers). Occupies a single slot in Series 90-70 racks. Memory on the Series 90-70 PCM consists of PROM, local RAM, and dual port RAM. PROM contains the operating system, the CCM protocol, a built-in MegaBasic interpreter, and related utilities. Local RAM is divided into two data areas, one for PCM internal use and the remainder for the user s data and programs. Dual port RAM is used for communications between the PCM and the Series 90-70 PLC CPU. RS 232/485 SEL DUAL PORT RAM ( 32K X 16 ) MICROPROCESSOR SYSTEM BUS INTERFACE NMI INTI LOGIC RACK CONNECTOR OPTION CONNECTOR LOCAL RAM ( 64K X 16 ) SERIAL CONTROLLER PORT ONE PORT TWO INT1 INT3 INT. DMA LOCAL BUS a42748 MB PROM ( 64K X 16 ) SYSTEM PROM ( 64K X 16 ) VME BUS PCM OK LED USER 1 LED USER 2 LED RESET PB NMI Figure 1-3. Series 90-70 PCM Hardware Block Diagram 1 1-10 Series 90 Programmable Coprocessor Module and Support Software User s Manual November 1999 GFK-0255K Two serial ports are provided for communication with a programming terminal, CRTs, bar code readers, and other devices. These ports are identical in function. On the Series 90-70 PCM, both ports support RS-232 and RS-485 operation through software configuration. The PCM has three LED indicators that enable you to determine the state of the PCM without having a terminal connected. The OK LED (top LED) indicates the current status of the PCM. The function of the USER1 and USER2 LED indicators (middle and bottom LEDs, respectively) can be configured by the user program or PCOP. By default, these LEDs indicate transmit and receive activity on serial ports 1 and 2, respectively. The option connector on the Series 90-70 PCM provides for the addition of expansion memory. The Series 90-30 PCM does not have an option connector. Table 1-1. Series 90-70 PCM Expansion Memory and Accessories Catalog No. Description IC697MEM713 Expansion memory, 64 Kbytes. IC697MEM715 Expansion memory, 128 Kbytes. IC697MEM717 Expansion memory, 256 Kbytes. IC697MEM719 Expansion memory, 512 Kbytes. IC697ACC701 Replacement battery, package of 2. IC690CBL701 PCM to IBM XT compatible 9-pin serial connector. IC690CBL702 PCM to IBM AT compatible 9-pin serial connector. IC690CBL705 PCM to IBM PS/2 compatible 25-pin serial connector. 1 GFK-0255K Chapter 1 Introduction 1-11 Section 5: Hardware Overview for the Series 90-30 PCM The Series 90-30 PCM features include: An 8 mHz 80C188 microprocessor. On-board RAM, options of 160, 192, or 640 Kbytes. Two serial ports, one RS-232 and one RS-232/RS-485. Backplane access to PLC memory. A real-time calendar clock synchronized to the PLC. A Restart/Reset pushbutton. Three status LEDs. Soft configuration (no dip switches or jumpers for most users). Occupies a single slot in the Series 90-30 I/O rack. Memory on the Series 90-30 PCM consists of PROM and local RAM. PROM contains the operating system, the CCM protocol, a built-in MegaBasic interpreter, and related utilities. Local RAM is divided into two data areas, one for PCM internal use and the remainder for the user s data and programs. BACKPLANE SERIAL CONTROLLER PCM OK LED USER 1 LED USER 2 LED MICROPROCESSOR SERIAL CONTROLLER PORT ONE LOCAL RAM 192K X 8 ( VARIES ) RESET PB NMI LOCAL BUS a44362 SYSTEM PROM 256K X 8 ( VARIES ) DMA LOGIC RACK CONNECTOR 90 30 RACK (SERIAL) PORT TWO RS 232/485 SEL Figure 1-4. Series 90-30 PCM Hardware Block Diagram 1 1-12 Series 90 Programmable Coprocessor Module and Support Software User s Manual November 1999 GFK-0255K Two serial ports are provided for communication with a programming terminal, CRTs, bar code readers, and other devices. These ports are identical in function and support RS-232 and/or RS-485/RS-422 operation through software configuration. On the Series 90-30 PCM, connections to both ports are made through a single 25-pin D-type connector. A WYE cable is supplied with each PCM module. This cable is 1 foot in length and has a right-angle connector on one end that connects to the PCM. On the other end, it has a dual connector with one connector for port 1 and the other for port 2. The PCM has three LED indicators that enable you to determine the state of the PCM without having a terminal connected. The OK LED (top LED) indicates the current status of the PCM. The function of the USER1 and USER2 LED indicators (middle and bottom LEDs, respectively) can be configured by Logicmaster 90 software, the user program, or PCOP. By default, these LEDs are used to indicate transmit and receive activity on serial ports 1 and 2, respectively. Several versions of the Series 90-30 PCM are available. The best one for a particular application may be selected on the basis of memory and serial port requirements. The following table lists the PCM versions by catalog number, along with the total RAM memory available on each module. Table 1-2. Series 90-