描述
本指令与ADD指令相似，是把两个四位BCD数作带借位减法，差值送入指定通道，其操作数同ADD指令。在编写SUB指令语言时，必须指定被减数，减数和差值的存放通道三个数
执行减法运算前必须加一条清进位位指令CLC（41）；被减数和减数必须是BCD数，否则25503置ON，不执行SUB指令；若运算结果有借位，则进位标志继电器25504为ON；若运算结果为零，则专用继电器25506变为ON。
FIREYE 60-1466-2 USPP 6014662
ELECTRONICS CORP. OF AMERICA FIRETRON 4-128 FIREYE NEW
FIREYE MED3 MicroM DAUGHTER BOARD W/REMOTE RESET
FIREYE 60-1386-2
NEW FIRETRON FIREYE 4-128 CELL SEALED IN CONTAINER
One-day shipping available
FIREYE 61-5042-NEW M-Series Subbase Open Wiring Base
FIREYE 60-1764 MM-1 ADAPTER
Fireye MT30-10 Purge Timing Card MT3010 New
FIREYE EUV1 FLAME AMPLIFIER MODULE
One-day shipping available
FIREYE EUV1
FIREYE E1R1
FIREYE 275-143-603720 USPP 275143603720
