Watlow CLS200, MLS300 and CAS200 User Manual download pdf (Page 86)

80 Communications Speciﬁcation

Appendix A: Communications Driver

char error_check; Set to BCC, or CRC. BCC = 1. CRC = 2;

Example Call:

Init_Comm_Port(1, TRUE, BCC); Open COM2 for 9600 baud using

Block Check Character(BCC).

Includes:

#include “def.h”

Return Values:

Returns TRUE if opening comm port was successful, or FALSE if

attempt failed.

Close_Comm_Port()

Use this command to Release the comm port and interrupt associated

with it.

void Close_Comm_Port(unsigned port);

unsigned port; This is either 0 or 1, depending on which

port is open.

Example Call:

Close_Comm_Port(1); Closes comm port 2 if open.

Includes:

#include “def.h”

DownLoad()

Use this command to download controller values.

char UpLoad(int ctlr_type, unsigned char ctlr_addr, unsigned char

cmmd_num, int offset, int num_elements, void * write_addr, char sts);

int ctlr_type; TYPE_MLS16, TYPE_MLS32,

TYPE_CLS4, TYPE_CLS8,

TYPE_CLS16.

unsigned char ctlr_addr; Controller address 0 to 31.

unsigned char cmmd_num; Command or parameter

number. See “def.h” for command

deﬁnes.

int offset; Offset into array.

int num_elements; Number of array elements to

download.

void * write_addr; Starting address of data array.

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Watlow CLS200, MLS300 and CAS200 User Manual Page 86