Omron 3G8F7-CRM21, User Manual

Page: 114 / 238

94
Explicit Messaging API Section A-6
Remarks To execute this function, the communications cycles must be running.
CPNT_EXPLICIT_REQ structure
A-6-2 CPNT_PeekExplicit (Check Response Received)
Purpose Check Explicit message responses.
Call Format BOOL CPNT_PeekExplicit (HANDLE Handle) ;
Argument
Returned value It returns TRUE when there is an explicit message response.
It returns FALSE when an error occurs or when there is no response. The
error details can be obtained with the function GetLastError.
Remarks The function CPNT_SendExplicit must be executed prior to this function.
A-6-3 CPNT_RegReceiveExplicitNotifyMessage (Register Notice of
Explicit Response Message Received)
Purpose Register the Windows message which notifies that an Explicit response
message is received.
Type Parameter Description
BYTE Sid This is used to identify to which explicit
message a response is addressed. The
same value is added to the response of a
sent explicit message.
Set a certain value for the user application.
Settable range: 0 to 255
BYTE Rsv Reserved area. Set 0.
WORD DstMacId MAC address (or the address over
CompoNet protocol) of the destination Slave
Unit,
[For Word IN Slave Unit]
MAC address=Node address
[For Word OUT Slave Unit]
MAC address=64+Node address
[For Bit IN Slave Unit]
MAC address=128+Node address
[For Bit OUT Slave Unit]
MAC address=256+Node address
[For Repeater]
MAC address=384+Node address
[For Master]
MAC address=448
WORD ServiceCode Set the service code of the explicit message.
WORD ClassId Set the Class ID of the explicit message.
WORD InstanceId Set the Instance ID of the explicit message.
WORD ServiceDataSize Set the Service data size (in bytes) of the
explicit message.
Specified range: 0x0000 to 0x0214 (0 to 532)
BYTE ServiceData[532] Set the Service data of the explicit message.
Type Parameter Direction Description
HANDLE Handle IN Device handle obtained with the
function CPNT_Open