Delta DVP-ES2/EX2/SS2/SA2/SX2/SE manual Limitation of synchronized execution, Numeric Values

3. Instruction Set

5.For counters C243, C245~C248, C251, C252, the total max times for using DHSCS, DHSCR and DHSZ instructions: 4. DHSZ takes up 2 times of the total available times.

6.For counters C244, C249, C250, C253, C254, the total max times for using DHSCS, DHSCR and DHSZ instructions: 4. DHSZ takes up 2 times of the total available times.

Limitation of synchronized execution

Most instructions have no limitation on the times to be used in a program, but there are limitations on the number of instruction to be executed in the same scan cycle.

1.Only 1 instruction can be executed at the same scan cycle: API 52 MTR, API 69 SORT, API 70 TKY, API 71 HKY, API 72 DSW, API 74 SEGL, API 75 ARWS.

2.Only 4 instruction can be executed at the same scan cycle: API 56 SPD, API 169 HOUR.

3.There is no limitation on the times of using the high-speed output instructions API 57 PLSY, API 58 PWM, API 59 PLSR, API 156DZRN, API 158 DDRVI, API 159 DDRVA and API 195 DPTPO, but only one high-speed output instruction will be executed in the same scan time.

4.There is no limitation on the times of using the communication instructions API 80 RS, API 100 MODRD, API 101 MODWR, API 102 FWD, API 103 REV, API 104 STOP, API 105 RDST, API 106 RSTEF , API 150 MODRW, but only one communication instruction will be executed on single COM port during the same scan cycle.

Numeric Values

1.Devices indicates ON/OFF status are called bit devices, e.g. X, Y, M and S. Devices used for storing values are called word devices, e.g. T, C, D, E and F. Although bit device can only be ON/OFF for a single point, they can also be used as numeric values in the operands of instructions if the data type declaration device Kn is added in front of the bit device.

2.For 16-bit data, K1~K4 are applicable. For 32-bit data, K1~K8 are applicable. For example, K2M0 refers to a 8-bit value composed of M0 ~ M7.

Valid data

M15 M14 M13 M12 M11 M10 M9 M8 M7 M6 M5 M4 M3 M2 M1 M0

	0	1	0	1	0	1	0	1	0	1	0	1	0	1	0	1
															Low byte
				Reset to 0					Transmit to
D1	0	0	0	0	0	0	0	0	0	1	0	1	0	1	0	1
	b15	b14	b13	b12	b11	b10	b9	b8	b7	b6	b5	b4	b3	b2	b1	b0
									Equals
															Low byte
D1	0	0	0	0	0	0	0	0	0	1	0	1	0	1	0	1

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