Rockwell Automation 1785 PLC-5 User Manual download pdf (Page 33)

1785-6.5.19 November 1998

Communicating via the Interface Module 4-3

Establishing an Ethernet

Connection

The Ethernet interface module supports 64 simultaneous connections

per module. A connection is a unique path to an end device, such as a

ControlNet PLC-5 processor on a ControlNet link attached via a

1756-CNB module. Each unique path uses a different connection.

There is an exception for a PLC-5 processor on a DH+ link attached

via a 1756-DHRIO module. Each 1756-DHRIO module uses only

one connection, regardless of how many devices are attached to it and

how many paths you define to those devices.

Multiple MSG instructions can use the same path to a device, but only

one connection is used because the path is the same.

Fault Code Description

91 Sidecar module undefined message type.

92 Sidecar module requesting undefined pool.

93 Sidecar module illegal maximum pool size.

94 Sidecar module illegal ASCII message

95 Sidecar module reported fault, which may be the result of a bad

program that corrupts memory or of a hardware failure.

96 Sidecar module not physically connected to the PLC-5

processor.

97 Sidecar module requested a pool size that is too small for PCC

command (occurs at power-up)

98 Sidecar module first/last 16 bytes RAM test failed

99 Sidecar module-to-processor data transfer faulted

100 Processor-to-sidecar module transfer failed

101 Sidecar module end of scan transfer failed

102 The file number specified for raw data transfer through the

sidecar module is an illegal value

103 The element number specified for raw data transfer through the

sidecar module is an illegal value

104 The size of the transfer requested through the sidecar module is

an illegal size

105 The offset into the raw transfer segment of the sidecar module

is an illegal value

106 Sidecar module transfer protection violation; for PLC-5/26,

-5/46, and -5/86 processors only.

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Rockwell Automation 1785 PLC-5 User Manual Page 33