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2600 Family Instruction Manual

Chapter 5 : Common IOM Actions

5.2.3 ResetFlags

Function Resets to zero the specified bit flags in the Status

byte.

Opcode 0xF2

Command (BitMask)

Response none

Notes This action clears all of the specified bit flags in

the Status byte (Section 3.4.1), which is present

in every ModRsp.

Except for the HRST (hard reset) bit flag, any

combination of bit flags may be cleared by the

Ethernet client. The client is not permitted to

clear the HRST flag because this flag is reserved

for gateway-to-IOM link control.

5.2.4 SetWatchdog

Function Programs the communication watchdog time-out

interval.

Opcode 0xF3

Command (Interval)

Response none

Notes The communication watchdog timer is used to

detect interruptions in communications between

the gateway and IOM. If no communications are

received from the gateway within the specified

time-out interval, an IOM will execute a

hardware watchdog reset. This behavior ensures

the shutdown of all I/O on any IOM which has

lost communication with the gateway.

The gateway automatically invokes this action

for an IOM when it first establishes

communication with the module. As a result,

there is no need for the client to explicitly invoke

this action. In a typical application system, the

client will never need to, nor should it, invoke

this action.

5.2.5 GetProductID

Function Returns the model type identifier.

Command (0xF5)

Response (ModelNum<15:8>),(ModelNum<7:0>)

Notes The returned value is a 16-bit, unsigned integer

that indicates the model number of the target

module. For example, the decimal value 2650 is

returned by a model 2650 relay module.

5.2.6 GetVersion

Function Returns the firmware version number.

Opcode 0xF6

Command none

Response (MajorVer),(MinorVer)

Notes On firmware labels, the major and minor version

numbers are printed with a decimal point

delimiter. For example, printed version “1.02” is

indicated by MajorVer = 1 and MinorVer =

5.2.7 GetAddress

Function Returns the address shunt settings.

Opcode 0xF7

Command none

Response (Address)

Parameter Function

BitMask Specifies the bit flags to be cleared. Set

a mask bit to one to clear the matching

Status bit. Set a mask bit to zero to

leave the matching Status bit in its

current state.

Parameter Function

Interval Communication watchdog interval,

specified in 2 millisecond increments.

Specify zero to disable the

communication watchdog.

Parameter Function

ModelNum Model number of the target module.

Parameter Function

MajorVer Major version number. Ranges from

00 to 99 decimal.

MinorVer Minor version number. Ranges from

00 to 99 decimal.

Parameter Function

Address Address shunt settings. Ranges from

0x00 to 0x0F.

1 2 ... 27 28 29 30 31 32 33 34 35 36 37 ... 79 80

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