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2600 Family Instruction Manual

Chapter 11 : Model 2652 SSR Module

11.6.3 SetOutputs

Function Programs the output driver states of all channels

that are configured for the Standard operating

mode.

Opcode 0x02

Command (States)

Response none

Notes SetOutputs programs the output driver states

of channels that are configured for the Standard

operating mode; it has no effect on channels that

are configured for the PWM operating mode.

In order to optimize the network response time,

SetOutputs invokes a deferred processing

function on the 2652 module. When the

SetOutputs action executes, it immediately

generates a response to acknowledge receipt of

the action, but the physical driver states may not

change immediately. Instead, the output drivers

will change to their target values within two

milliseconds of executing this action.

All modified outputs will change state

synchronously so that arbitrary groups of SSR

channels can be used in applications that require

“state machine” type behavior.

11.6.4 SetModes

Function Programs the operating modes for all channels.

Opcode 0x03

Command (ModeFlags)

Response none

Notes Each channel may operate in either the Standard

mode or the PWM mode. Following a reset, all

channels default to the Standard operating mode.

When a channel’s operating mode is first

changed to the PWM mode, its output driver duty

cycle is reset to zero; this prevents the output

from going active until the duty cycle is explicitly

set by a SetPwmRatio action.

Similarly, when a channel’s operating mode is

changed to the Standard mode, its output driver is

reset to the inactive state to prevent its output

from going active until explicitly set by a

SetOutputs action.

11.6.5 GetModes

Function Returns the operating modes for all channels.

Opcode 0x04

Command none

Response (ModeFlags)

Notes GetModes returns the current operating modes

of all SSR channels. The operating modes may

be changed under program control (e.g., in

response to a SetModes action) or

unexpectedly (e.g., all channel operating modes

revert to the default when a module reset occurs).

11.6.6 SetPwmRatio

Function Programs the PWM timing attributes for one SSR

channel.

Opcode 0x05

Parameter Function

States Bit flags. Each flag represents the

target output state for one SSR channel.

For example, bit 7 is associated with

SSR channel 7. Set a bit to one to

program the associated channel to the

active state, or to zero to program the

channel to the inactive state.

Parameter Function

ModeFlags Operating modes for all channels.

Each bit is associated with a channel

number. For example, bit 4 is

associated with channel 4. Set a bit

to one to select the PWM mode, or to

zero to select the Standard mode.

Parameter Function

ModeFlags Operating modes for all channels.

Each bit is associated with a channel

number. For example, bit 4 is

associated with channel 4. Set a bit

to one to select the PWM mode, or to

zero to select the Standard mode.

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