B&B Electronics MODSCAN32 - Manual - Manual (Page 23)

23
FORCE MULTIPLE COILS (FUNCTION CODE 15)
Function 15 allows the user to modify the contents of a group of consecutively addressed coils.
The following example forces 10 coils starting at address 20, (13 HEX). The two data fields,
CD = 1100 1101 and 00 = 0000 0000, indicate that coils 27, 26, 23, 22 and 20 are to be forced on.
ADDR FUN
C H.O.
ADDR L.O.
ADDR QUANTITY BYTE
CNT DATA
COIL
STATUS DATA
COIL
STATUS ERROR
CHECK
FIELD
11 0F 00 13 00 0A 02 CD 00 F4
The normal response to a FORCE MULTIPLE COILS request is to echo the slave address, function code,
starting address, and quantity of coils set.
ADDR FUNC H.O.
ADDR L.O.
ADDR QUANTITY ERROR
CHECK
FIELD
11 0F 00 13 00 0A C3