Yaskawa 545 PLC User Manual

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Drive Description

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MicroTrac Gateway to Texas Instruments

545 PLC Part No. 46S03056-0010

For use on MicroTrac Local Area Network

INTRODUCTION

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I N T R O D U C T I O N

H A R D WA R E

The Texas Instruments 545 Programmable Logic Controller Gateway (PLC Gateway) allows any drive on the MicroTr a c®LAN to transfer data to or from a Texas Instruments 545 PLC. Both logic and numeric information can be t r a n s f e r r e d .

The Texas Instruments Gateway is a self-contained 6 slot PC back plane enclosure consisting of 2 half-size AT style slots, 1 half-size XT style slot, 2 full length AT style slots and 1 full length AT style slot all covered with a sheet metal c o v e r. The gateway also contains the power supply and has a sheet metal cover. Installed in the gateway are three XT style (8 bit) PC compatible cards. They a r e :

1. A MicroTrac interface card with an ARCNET high impedance (bus configuration) BNC connector for coaxial cable. MagneTek part number 0 5 P 0 0 0 9 0 - 0 2 6 9 .

2. A 5136-TI (Texas Instruments) interface card to connect to the Texas Instruments Remote I/O Network for 545 Series I/O Modules. M a g n e Tek part number 05P00090-0314.

3. An 80188 based CPU card with 64K RAM and 128K EPROM. M a g n e Tek part number 46S03162-0010 .

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HARDWARE

Setup

S e t u p

Each of the three cards installed in the back plane has jumpers and switches that must be set before insertion into the back plane. After insertion, certain external cable connections must be made in order for the system to function properly.

M i c r o Tr a c

N e t w o r k

Interface Card

Set memory segment base to 0E000H and I/O memory base to 002E0H by installing jumper plugs on E1 as shown in Table 1:

Table 1. E1 Settings

POSITION JUMPER

TOP YES

YES

NO NO NO

YES

BOTTOM YES

Set interrupt source to IRQ3 by installing jumper plugs on E4 as shown in Table 2:

Table 2. E4 Settings

POSITION JUMPER

IRQ2 NO

YES

NO NO

IRQ7 NO

If a MagneTek TI ROM configuration is used, enable ROM memory by installing a jumper plug at the /ENROM position of E3.

The node ID is set using the 8-position DIP switch, SW1. Enter the binary node ID by choosing either a "0" or "1" for each bit. The least significant bit (LSB) and the most significant bit (MSB) positions are labeled on the board. The LSB is toward the top of the board. Leaving the switch in the down position sets the switch at "0". For example, node ID 200, represented in binary form as 11 0 0 1000, is set as shown in Table 3:

Table 3. DIP Switch SW1 Settings

MSB LSB

UP UP DN DN UP DN DN DN

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HARDWARE

Setup

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The node number for the PLC gateway will normally be 200; however, check your system schematic to confirm that this is correct. Occasionally a diff e r e n t node number might be used.

This card may be installed into any half-size slot of the back plane. A BNC type “T” connector is to be used to interconnect this board to the

M i c r o Trac DSD LAN’s coaxial cable. The 5136-TI (Texas Instruments) Interface card is designed to handle

communications between the 545 PLC and the CPU card. The card is used in the factory default state, with DIP switches set as shown in Table 4:

The 5136-TI Interface card is connected to the RS-485 remote I/O bus structure in the same way as any other remote base, with a DB-9 male connector. Refer to the cabling and wiring section of the TI installation manual for details.

Set serial port select to RS-232. This is done by installing a jumper plug on E1 on the CPU Card to connect from the center pin to the 232 pin.

Set I/O Channel Check to disabled. This is done by installing a jumper plug on E3 on the CPU Card to connect from the center pin to the DIS pin.

There is a 32K static RAM chip installed in both the RAM0 and RAM1 sockets.

There must be a 64K EPROM, containing the PLC gateway software, installed into socket ROM1.

There must be a 64K EPROM, containing the 5136-TI software, installed into socket ROM0.

Table 4. 5136-TI Interface Card Switch Settings

SWITCH POSITION

1 OFF 2 ON 3 OFF 4 ON 5 OFF 6 OFF

5136-TI Interface

C a r d

80188 Based

CPU Card

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HARDWARE

General

Normally the PLC gateway will be mounted and wired on a MagneTek drive panel. However, the gateway can be mounted remotely by the customer. In this case, special consideration must be given to the 120 VAC power source for the gateway power supply. DO NOT plug the gateway power cord directly into a wall outlet. Instead, use an isolation transformer and tie one side of the secondary to the nearest earth ground (the steel structure of the building is usually a good choice). The ground studs on the MicroTrac drive panels or cabinets must also be connected directly to a solid earth ground in order to assure that the gateway enclosure and the drive panels are at the same potential. Otherwise, erratic operation of the MicroTrac LAN system may occur.

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SOFTWARE

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SOFTWARE

The EPROMs on the CPU card contain a software program that is fixed (i.e. not changeable on a job-to-job basis), and is transparent to the user. The software allows bi-directional communication between MicroTrac DSD drives and the Texas Instruments series 545 PLCs as follows:

Logics

1. PAC block LOGI, inputs from the PLC discrete output modules.

2. PAC block LOGO, outputs to the PLC discrete input modules.

Numerics

1. PAC block NUMI, inputs from the PLC register output modules.

2. PAC block NUMO, outputs to the PLC register input modules.

The PLC gateway provides a means of moving data between the nodes on the MicroTrac LAN and the Texas Instruments PLC. It does this by being a node on the MicroTrac LAN and also pretending to be one or more remote drops on the Remote I/O network of the Texas Instruments PLC. These drops are referred to as simulated drops because they are not physical drops with racks containing real modules.

Several steps are required to begin the exchange of data; some deal with configuring the Texas Instruments PLC, and some with programming the PAC blocks in the MicroTrac LAN nodes.

As described above, the PLC gateway looks to the Texas Instruments PLC as one or more bases. Even though these are simulated bases, the PLC treats them as normal bases. Therefore, they must be defined as simulated bases in the Texas Instruments Traffic Cop.

IMPORTANT: All slots in the TI Traffic Sop must be used by the drive

nodes. This can be accomplished by judicious PAC programming or PLC configuration. An alternative method is to use a MagneTek TI Gateway ROM configuration EPROM in the gateway.

Use the following information when assigning modules in the rack:

1. A base cannot be both real and simulated, so choose a base number that is not already use by real drops.

2. Simulated base numbers can be in the range of 1 to 9.

OPERATION

Configuring the

Texas

Instruments

545 PLC

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